Myburgh, S.J.; Du Toit, P.J.
(Pretoria : The Government Printer, 1941)
1. Carotene values were determined by analysing veldgrass samples, collected monthly in the areas, Onderstepoort (Pretoria district), Ermelo (Transvaal Highlands) and Vryburg (Bechuanaland).
2. From the values for Carotene ...