Books by Hubert Dudley Leppan
The stabilisation of South Afr
The stabilisation of South African farming
The interdependence of animals
The interdependence of animals, crops and pasture, with special reference to South African farming
The Union's farming resources
The Union's farming resources
The agricultural development o
The agricultural development of arid and semi-arid regions
Lucerne culture in South Afric
Lucerne culture in South Africa
Field crops in South Africa