Hot jazz sets square alive
- Authors: Verdal, Garth
- Language: English
- Type: Article
- Identifier: vital:13664 , http://hdl.handle.net/10962/d1012576
- Description: Article from the Argus describing Chris McGregor's concert with lots of enthusiasm. The concert was warmly acclaimed and brought together people of all races and ages.
- Full Text:
- Authors: Verdal, Garth
- Language: English
- Type: Article
- Identifier: vital:13664 , http://hdl.handle.net/10962/d1012576
- Description: Article from the Argus describing Chris McGregor's concert with lots of enthusiasm. The concert was warmly acclaimed and brought together people of all races and ages.
- Full Text:
Chris McGregor for city concert
- Authors: Verdal, Garth
- Language: English
- Type: Article
- Identifier: vital:13663 , http://hdl.handle.net/10962/d1012575
- Description: Article from the Supplement to The Argus about Chris McGregor's return to South Africa for a concert at the Carling Jazz Circle Festival. "The pioneer who led the Blue Notes to fame back in the '60s makes his first appearance in SA after 20 years' exile." There is also a close up photo of Chris McGregor with the article.
- Full Text:
- Authors: Verdal, Garth
- Language: English
- Type: Article
- Identifier: vital:13663 , http://hdl.handle.net/10962/d1012575
- Description: Article from the Supplement to The Argus about Chris McGregor's return to South Africa for a concert at the Carling Jazz Circle Festival. "The pioneer who led the Blue Notes to fame back in the '60s makes his first appearance in SA after 20 years' exile." There is also a close up photo of Chris McGregor with the article.
- Full Text:
A machine-independent microprogram development system
- Authors: Ward, Michael John
- Date: 1987 , 2013-03-11
- Subjects: Microprogramming
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4581 , http://hdl.handle.net/10962/d1003738 , Microprogramming
- Description: The aims of this project are twofold. They are firstly, to implement a microprogram development system that allows the programmer to write microcode for any microprogrammable machine, and secondly, to build a microprogrammable machine, incorporating the user friendliness of a simulator, while still providing the 'hands on' experience obtained actual hardware. Microprogram development involves a two stage process. The first step is to describe the target machine, using format descriptions and mnemonic-based template definitions. The second stage involves using the defined mnemonics to write the microcodes for the target machine. This includes an assembly phase to translate the mnemonics into the binary microinstructions. Three main components constitute the microprogrammable machine. The Arithmetic and Logic Unit (ALU) is built using chips from Advanced Micro Devices' Am29ØØ bit-slice family, the action of the Microprogram Control Unit (MCU) is simulated by software running on an IBM Personal Computer, and a section of the IBM PC's main memory acts as the Control Store (CS) for the system. The ALU is built on a prototyping card that plugs into one of the slots on the IBM PC's mother board. A hardware simulator program, that produces the effect of the ALU, has also been developed. A small assembly language has been developed using the system, to test the various functions of the system. A mini-assembler has also been written to facilitate assembly of the above language. A group of honours students at Rhodes University tested the microprogram development system. Their ideas and suggestions have been tabulated in this report and some of them have been used to enhance the system's performance. The concept of allowing 'inline' microinstructions in the macroprogram is also investigated in this report and a method of implementing this is shown.
- Full Text:
- Date Issued: 1987
- Authors: Ward, Michael John
- Date: 1987 , 2013-03-11
- Subjects: Microprogramming
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4581 , http://hdl.handle.net/10962/d1003738 , Microprogramming
- Description: The aims of this project are twofold. They are firstly, to implement a microprogram development system that allows the programmer to write microcode for any microprogrammable machine, and secondly, to build a microprogrammable machine, incorporating the user friendliness of a simulator, while still providing the 'hands on' experience obtained actual hardware. Microprogram development involves a two stage process. The first step is to describe the target machine, using format descriptions and mnemonic-based template definitions. The second stage involves using the defined mnemonics to write the microcodes for the target machine. This includes an assembly phase to translate the mnemonics into the binary microinstructions. Three main components constitute the microprogrammable machine. The Arithmetic and Logic Unit (ALU) is built using chips from Advanced Micro Devices' Am29ØØ bit-slice family, the action of the Microprogram Control Unit (MCU) is simulated by software running on an IBM Personal Computer, and a section of the IBM PC's main memory acts as the Control Store (CS) for the system. The ALU is built on a prototyping card that plugs into one of the slots on the IBM PC's mother board. A hardware simulator program, that produces the effect of the ALU, has also been developed. A small assembly language has been developed using the system, to test the various functions of the system. A mini-assembler has also been written to facilitate assembly of the above language. A group of honours students at Rhodes University tested the microprogram development system. Their ideas and suggestions have been tabulated in this report and some of them have been used to enhance the system's performance. The concept of allowing 'inline' microinstructions in the macroprogram is also investigated in this report and a method of implementing this is shown.
- Full Text:
- Date Issued: 1987
A comparison of nesting behaviour and prey selection in some Southern African species of Ammophila (Hymenoptera : Sphecidae)
- Authors: Weaving, Alan James Shelley
- Date: 1987
- Subjects: Hymenoptera
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5600 , http://hdl.handle.net/10962/d1002050
- Description: Nesting behaviour and prey selection was compared in eight species of Ammophila. The frequent sympatry of these species was a central point of interest in the study. Nest siting differed markedly in several species. A. ferrugineipes, A. dolichodera, A. dolichocephala and, probably, A. conifera nested mostly in open habitats, this being regarded as the most common situation for the majority of Ammophila. A. beniniensis was unusual in nesting in well vegetated habitats, A. vulcania doing so amongst small clumps of vegetation in otherwise open habitats. A. insignis nested in vertical banks or old animal burrows and A. braunsi utilised abandoned burrows of other wasps situated in non-friable clay soils. This is the first time such nest siting has been reported for Ammophila and each of these two species is consequently unique. Many aspects of nest construction behaviour, in particular methods of soil waste disposal, sealing of nests and their final coverage, differed interspecifically, in some cases intraspecifically, but often apparently in response to the habitat. With regard to nest provisioning strategies, all species hunted after digging their nests, except A. dolichodera which is the first Afrotropical Ammophila reported to hunt before excavating its nest. This brings the total number of the world's species of Ammophila showing this behaviour to three. This species, A. beniniensis, A. braunsi and A. vulcania provided one caterpillar per nest; the others supplied several, A. insignis being the only mass provisioner. A. ferrugineipes showed a form of progressive provisioning and maintained several nests at a time; it is the only Afrotropical species known so far to do so. Only two extra-limital species have been reported showing similar behaviour. The observed variations in provisioning strategies can most easily be explained in relation to the habitat. Investigation of prey selection showed that there was very little interspecific overlap in the species of caterpillars used for provisioning nests. This was shown to be due mainly to differing hunting habitat preferences. The various overall patterns of nesting behaviour, and variations in the different components within these patterns, were considered most likely to have resulted from allopatric speciation in different types of vegetation, the more advanced patterns arising in open habitats. The frequent occurrence of sympatry appears to be a reflection of a shifting distribution of mosaic patterns of vegetation types and the post-speciation spread of species. This influence of habitat on behaviour and prey selection has emphasised the need for caution in drawing phylogenetic conclusions from ethology. Further, these considerations provide an alternative to competition in attempting to explain the observed behaviour patterns and distribution of these wasps.
- Full Text:
- Date Issued: 1987
- Authors: Weaving, Alan James Shelley
- Date: 1987
- Subjects: Hymenoptera
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5600 , http://hdl.handle.net/10962/d1002050
- Description: Nesting behaviour and prey selection was compared in eight species of Ammophila. The frequent sympatry of these species was a central point of interest in the study. Nest siting differed markedly in several species. A. ferrugineipes, A. dolichodera, A. dolichocephala and, probably, A. conifera nested mostly in open habitats, this being regarded as the most common situation for the majority of Ammophila. A. beniniensis was unusual in nesting in well vegetated habitats, A. vulcania doing so amongst small clumps of vegetation in otherwise open habitats. A. insignis nested in vertical banks or old animal burrows and A. braunsi utilised abandoned burrows of other wasps situated in non-friable clay soils. This is the first time such nest siting has been reported for Ammophila and each of these two species is consequently unique. Many aspects of nest construction behaviour, in particular methods of soil waste disposal, sealing of nests and their final coverage, differed interspecifically, in some cases intraspecifically, but often apparently in response to the habitat. With regard to nest provisioning strategies, all species hunted after digging their nests, except A. dolichodera which is the first Afrotropical Ammophila reported to hunt before excavating its nest. This brings the total number of the world's species of Ammophila showing this behaviour to three. This species, A. beniniensis, A. braunsi and A. vulcania provided one caterpillar per nest; the others supplied several, A. insignis being the only mass provisioner. A. ferrugineipes showed a form of progressive provisioning and maintained several nests at a time; it is the only Afrotropical species known so far to do so. Only two extra-limital species have been reported showing similar behaviour. The observed variations in provisioning strategies can most easily be explained in relation to the habitat. Investigation of prey selection showed that there was very little interspecific overlap in the species of caterpillars used for provisioning nests. This was shown to be due mainly to differing hunting habitat preferences. The various overall patterns of nesting behaviour, and variations in the different components within these patterns, were considered most likely to have resulted from allopatric speciation in different types of vegetation, the more advanced patterns arising in open habitats. The frequent occurrence of sympatry appears to be a reflection of a shifting distribution of mosaic patterns of vegetation types and the post-speciation spread of species. This influence of habitat on behaviour and prey selection has emphasised the need for caution in drawing phylogenetic conclusions from ethology. Further, these considerations provide an alternative to competition in attempting to explain the observed behaviour patterns and distribution of these wasps.
- Full Text:
- Date Issued: 1987
An analysis of problems arising out of English medium instruction of pupils in ten Ciskeian schools, with particular reference to geography in standard eight
- Authors: Weimann, Alan Gilbert
- Date: 1987
- Subjects: Geography -- Study and teaching (Secondary) -- South Africa -- Ciskei , Language and education -- South Africa -- Ciskei , Native language and education -- South Africa -- Ciskei , Students, Black -- Education -- South Africa -- Ciskei , Language arts -- South Africa -- Ciskei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1342 , http://hdl.handle.net/10962/d1001408
- Description: Pupils in the Republic of South Africa in the T.B.V.C. States (Transkei, Bophuthatswana, Venda and Ciskei) are expected to commence study in all school subjects, except the first language (Xhosa, Tswana, Venda etc.) and the third language (Afrikaans), through the medium of English at the Std 3 level. English thus is the official medium of instruction for the greater part of the pupil's school experience. All examinations in all subjects (except those mentioned above) are set and answered through the medium of English. School textbooks from Std 3 upwards, in all subjects, are written in English. It is fairly safe to assert, therefore, that English should be the language life of the Higher Primary and Secondary School classroom. In 1953 a UNESCO report of proceedings of a conference held in 1951 maintained that the best medium for teaching a pupil was that of the mother-tongue. The report pleaded for mother-tongue instruction to be extended to as late a stage as possible in a pupil's school life (UNESCO 1953). While such a plea may be grounded on sound psychological and pedagogical reasoning, it is often ignored because of the realities existing within the educational system. The R.S.A. and the T.B.V.C. states are a case in point for as I have already mentioned, examinations, textbooks, and for that matter tertiary education at the post-matriculation level, all employ English as instructional medium. Pragmatism carries the day and the black pupil is compelled to use English. Other factors applicable to the South African context are the existence of many different ethnic groups, each with its own language, and the fact that a shortage of qualified and experienced teachers in many subjects and different levels within the schools has meant that often teachers whose first language is English are involved in teaching pupils from these various language groups
- Full Text:
- Date Issued: 1987
- Authors: Weimann, Alan Gilbert
- Date: 1987
- Subjects: Geography -- Study and teaching (Secondary) -- South Africa -- Ciskei , Language and education -- South Africa -- Ciskei , Native language and education -- South Africa -- Ciskei , Students, Black -- Education -- South Africa -- Ciskei , Language arts -- South Africa -- Ciskei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1342 , http://hdl.handle.net/10962/d1001408
- Description: Pupils in the Republic of South Africa in the T.B.V.C. States (Transkei, Bophuthatswana, Venda and Ciskei) are expected to commence study in all school subjects, except the first language (Xhosa, Tswana, Venda etc.) and the third language (Afrikaans), through the medium of English at the Std 3 level. English thus is the official medium of instruction for the greater part of the pupil's school experience. All examinations in all subjects (except those mentioned above) are set and answered through the medium of English. School textbooks from Std 3 upwards, in all subjects, are written in English. It is fairly safe to assert, therefore, that English should be the language life of the Higher Primary and Secondary School classroom. In 1953 a UNESCO report of proceedings of a conference held in 1951 maintained that the best medium for teaching a pupil was that of the mother-tongue. The report pleaded for mother-tongue instruction to be extended to as late a stage as possible in a pupil's school life (UNESCO 1953). While such a plea may be grounded on sound psychological and pedagogical reasoning, it is often ignored because of the realities existing within the educational system. The R.S.A. and the T.B.V.C. states are a case in point for as I have already mentioned, examinations, textbooks, and for that matter tertiary education at the post-matriculation level, all employ English as instructional medium. Pragmatism carries the day and the black pupil is compelled to use English. Other factors applicable to the South African context are the existence of many different ethnic groups, each with its own language, and the fact that a shortage of qualified and experienced teachers in many subjects and different levels within the schools has meant that often teachers whose first language is English are involved in teaching pupils from these various language groups
- Full Text:
- Date Issued: 1987
A taxonomic revision of the genus Synodontis (Pisces, Mochokidae) in Southern Africa
- Authors: White, Peter Nevins
- Date: 1987
- Subjects: Mochokidae -- Africa, Southern -- Classification , Synodontis -- Africa, Southern -- Classification
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5193 , http://hdl.handle.net/10962/d1001969 , Mochokidae -- Africa, Southern -- Classification , Synodontis -- Africa, Southern -- Classification
- Description: The alpha taxonomy of the southern African Synodontis is reviewed, based on the analysis of 48 characters. The previously descriptive characters of barbel branching and humeral process shape are compared by various quantitative methods. The variation in colour pattern is recorded with the aid of detailed line drawings. The definitions of head length, head width and humeral process length are altered slightly from their traditional descriptions to ensure greater consistency and precision in measurement. New characters include the size of the caudal fork, the number, shape and arrangement of the premaxillary teeth, and two measurements between the cranium and pectoral girdle. Both uni- and bivariate methods are used to record and compare the intraspecific variation of each character. Principal components analysis of 19 morphometric characters is used to assess the degree of similarity of nine allopatric populations of S. zambezensis. Ten species are recognized from the study area, two of which are described as new: S. nebulosus Peters 1852, S. zambezensis Peters 1852, S. nigromaculatus Boulenger 1905, S. njassae Keilhack 1908, S. woosnami Boulenger 1911, S. macrostigma Boulenger 1911, S. leopardinus Pellegrin 1914, S. thamalakanensis Fowler 1935, S. macrostoma sp.n. and S.vanderwaali sp.n. A key to their identification is provided. Characters are discussed in terms of their contribution to the identification of the southern African species and, where possible, suggestions made concerning the value of these characters to the taxonomy of the genus as a whole. The rejection of certain characters previously used in Synodontis keys is discussed and alternatives proposed. The state of southern African Synodontis taxonomy is assessed and recommendations for future research are given
- Full Text:
- Date Issued: 1987
- Authors: White, Peter Nevins
- Date: 1987
- Subjects: Mochokidae -- Africa, Southern -- Classification , Synodontis -- Africa, Southern -- Classification
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5193 , http://hdl.handle.net/10962/d1001969 , Mochokidae -- Africa, Southern -- Classification , Synodontis -- Africa, Southern -- Classification
- Description: The alpha taxonomy of the southern African Synodontis is reviewed, based on the analysis of 48 characters. The previously descriptive characters of barbel branching and humeral process shape are compared by various quantitative methods. The variation in colour pattern is recorded with the aid of detailed line drawings. The definitions of head length, head width and humeral process length are altered slightly from their traditional descriptions to ensure greater consistency and precision in measurement. New characters include the size of the caudal fork, the number, shape and arrangement of the premaxillary teeth, and two measurements between the cranium and pectoral girdle. Both uni- and bivariate methods are used to record and compare the intraspecific variation of each character. Principal components analysis of 19 morphometric characters is used to assess the degree of similarity of nine allopatric populations of S. zambezensis. Ten species are recognized from the study area, two of which are described as new: S. nebulosus Peters 1852, S. zambezensis Peters 1852, S. nigromaculatus Boulenger 1905, S. njassae Keilhack 1908, S. woosnami Boulenger 1911, S. macrostigma Boulenger 1911, S. leopardinus Pellegrin 1914, S. thamalakanensis Fowler 1935, S. macrostoma sp.n. and S.vanderwaali sp.n. A key to their identification is provided. Characters are discussed in terms of their contribution to the identification of the southern African species and, where possible, suggestions made concerning the value of these characters to the taxonomy of the genus as a whole. The rejection of certain characters previously used in Synodontis keys is discussed and alternatives proposed. The state of southern African Synodontis taxonomy is assessed and recommendations for future research are given
- Full Text:
- Date Issued: 1987
CSP-i : an implementation of CSP
- Authors: Wrench, Karen Lee
- Date: 1987 , 2013-03-08
- Subjects: Synchronization--Computers , Programming languages (Electronic computers)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4579 , http://hdl.handle.net/10962/d1003124 , Synchronization--Computers , Programming languages (Electronic computers)
- Description: CSP (Communicating Sequential Processes) is a notation proposed by Hoare, for expressing process communication and synchronization. Although this notation has been widely acclaimed, Hoare himself never implemented it as a computer language. He did however produce the necessary correctness proofs and subsequently the notation has been adopted (in various guises) by the designers of other concurrent languages such as Ada and occam. Only two attempts have been made at a direct and precise implementation of CSP. With closer scrutiny, even these implementations are found to deviate from the specifications expounded by Hoare, and in so doing restrict the original proposal. This thesis comprises two main sections. The first of these includes a brief look at the primitives of concurrent programming, followed by a comparative study of the existing adaptations of CSP and other message passing languages. The latter section is devoted to a description of the author's attempt at an original implementation of the notation. The result of this attempt is the creation of the CSP-i language and a suitable environment for executing CSP-i programs on an IBM PC. The CSP-i implementation is comparable with other concurrent systems presently available. In some aspects, the primitives featured in CSP-i provide the user with a more efficient and concise notation for expressing concurrent algorithms than several other message-based languages, notably occam. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
- Full Text:
- Date Issued: 1987
- Authors: Wrench, Karen Lee
- Date: 1987 , 2013-03-08
- Subjects: Synchronization--Computers , Programming languages (Electronic computers)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4579 , http://hdl.handle.net/10962/d1003124 , Synchronization--Computers , Programming languages (Electronic computers)
- Description: CSP (Communicating Sequential Processes) is a notation proposed by Hoare, for expressing process communication and synchronization. Although this notation has been widely acclaimed, Hoare himself never implemented it as a computer language. He did however produce the necessary correctness proofs and subsequently the notation has been adopted (in various guises) by the designers of other concurrent languages such as Ada and occam. Only two attempts have been made at a direct and precise implementation of CSP. With closer scrutiny, even these implementations are found to deviate from the specifications expounded by Hoare, and in so doing restrict the original proposal. This thesis comprises two main sections. The first of these includes a brief look at the primitives of concurrent programming, followed by a comparative study of the existing adaptations of CSP and other message passing languages. The latter section is devoted to a description of the author's attempt at an original implementation of the notation. The result of this attempt is the creation of the CSP-i language and a suitable environment for executing CSP-i programs on an IBM PC. The CSP-i implementation is comparable with other concurrent systems presently available. In some aspects, the primitives featured in CSP-i provide the user with a more efficient and concise notation for expressing concurrent algorithms than several other message-based languages, notably occam. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
- Full Text:
- Date Issued: 1987
Old cemetery
- Date: 1987
- Subjects: f-sa , not available 30.5595° S, 22.9375° E , Cemeteries -- South Africa -- Grahamstown -- Maps Maps , South Africa History 1909-1961
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/115727 , vital:34219 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , MP1861
- Description: Municipality of the city of Grahamstown. Parks. Old cemetery. Feb 1987. Showing Wesleyan, Anglican, Baptis, Presbyterian, Roman Catholic.
- Full Text: false
- Date Issued: 1987
- Date: 1987
- Subjects: f-sa , not available 30.5595° S, 22.9375° E , Cemeteries -- South Africa -- Grahamstown -- Maps Maps , South Africa History 1909-1961
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/115727 , vital:34219 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , MP1861
- Description: Municipality of the city of Grahamstown. Parks. Old cemetery. Feb 1987. Showing Wesleyan, Anglican, Baptis, Presbyterian, Roman Catholic.
- Full Text: false
- Date Issued: 1987
Rhodes Newsletter
- Date: 1987
- Subjects: Grahamstown -- Newspapers , Journalism -- South Africa , Rhodes University -- Newspapers , Rhodes University -- Rhodes Newsletter
- Language: English
- Type: Text
- Identifier: vital:14298 , http://hdl.handle.net/10962/d1019003
- Description: The Old Rhodian Union Newsletter keeping in contact with Alumni and informing them of the latest news from Rhodes University. The publication ran from 1951 to 2001, and was subsequenlty replaced with an electronic newsletter distributed via electronic mail.
- Full Text:
- Date Issued: 1987
- Date: 1987
- Subjects: Grahamstown -- Newspapers , Journalism -- South Africa , Rhodes University -- Newspapers , Rhodes University -- Rhodes Newsletter
- Language: English
- Type: Text
- Identifier: vital:14298 , http://hdl.handle.net/10962/d1019003
- Description: The Old Rhodian Union Newsletter keeping in contact with Alumni and informing them of the latest news from Rhodes University. The publication ran from 1951 to 2001, and was subsequenlty replaced with an electronic newsletter distributed via electronic mail.
- Full Text:
- Date Issued: 1987
Records of the inquest into the murder of Matthew Goniwe, Sparrow Mkonto, Fort Calata and Sicelo Mhlauli near Port Elizabeth on 21 June 1985
- Date: between 1987 and 1989 , 1987 , 1989 , 2020
- Subjects: Goniwe, Matthew 1946-1985 , Calata, Fort -1985 , Mkonto, Sparrow -1985 , Mhlauli, Sicelo -1985 , South Africa South African Defence Force , South African Police , Violent deaths South Africa , Inquests South Africa
- Language: English , Afrikaans
- Type: legal case and case notes , text
- Identifier: http://hdl.handle.net/10962/164749 , vital:41161 , Rhodes University, Cory Library for Humanities Research Cory Library Manuscript Collection MS 18 898
- Description: Inquest no. 626/87, heard in the Regional Court at New Brighton, Port Elizabeth. Record of proceedings and finding by Mr E de Beer.
- Full Text:
- Date Issued: between 1987 and 1989
- Date Issued: 1987
- Date Issued: 1989
- Date: between 1987 and 1989 , 1987 , 1989 , 2020
- Subjects: Goniwe, Matthew 1946-1985 , Calata, Fort -1985 , Mkonto, Sparrow -1985 , Mhlauli, Sicelo -1985 , South Africa South African Defence Force , South African Police , Violent deaths South Africa , Inquests South Africa
- Language: English , Afrikaans
- Type: legal case and case notes , text
- Identifier: http://hdl.handle.net/10962/164749 , vital:41161 , Rhodes University, Cory Library for Humanities Research Cory Library Manuscript Collection MS 18 898
- Description: Inquest no. 626/87, heard in the Regional Court at New Brighton, Port Elizabeth. Record of proceedings and finding by Mr E de Beer.
- Full Text:
- Date Issued: between 1987 and 1989
- Date Issued: 1987
- Date Issued: 1989