Preliminary study of crop yields and rainfall in the Transvaal
Haylett, D.G.
Preliminary study of crop yields and rainfall in the Transvaal - Pretoria 1930 - 1-60 p. - Crop, Rainfall Pretoria Transvaal University College. Bulletin No. 19 .
Preliminary study of crop yields and rainfall in the Transvaal - Pretoria 1930 - 1-60 p. - Crop, Rainfall Pretoria Transvaal University College. Bulletin No. 19 .