Fertilizer and irrigation experiments at the Upington Agricultural Research Stat
Naude, C.P.
Fertilizer and irrigation experiments at the Upington Agricultural Research Stat - Pretoria 1955 - 42 p. - No. 359; Union of South Afric .
Fertilizer and irrigation experiments at the Upington Agricultural Research Stat - Pretoria 1955 - 42 p. - No. 359; Union of South Afric .