https://commons.ru.ac.za/vital/access/manager/Index en-us 5 Some problems and methods of measuring the growth of African negroid populations https://commons.ru.ac.za/vital/access/manager/Repository/vital:3388 Wed 12 May 2021 20:34:36 SAST ]]> Measurements of the solubilities of some silver halides in water by electrical methods https://commons.ru.ac.za/vital/access/manager/Repository/vital:4515 Wed 12 May 2021 17:31:22 SAST ]]> An investigation of the spectra and decay times of some organic phosphors under ultraviolet and ionising radiation https://commons.ru.ac.za/vital/access/manager/Repository/vital:5530 Thu 13 May 2021 03:16:44 SAST ]]>