The new varieties under dryland conditions : Mexican wheats in Tunisia

von Purvis, Malcolm J.
Veröffentlicht in American journal of agricultural economics (1973)

The adoption of high-yielding wheats

von Purvis, Malcolm J.
Veröffentlicht in Change in Tunisia (1976)

New sources of growth in a stagnant smallholder economy in Nigeria : the Oil Palm Rehabilitation Scheme

von Purvis, Malcolm J.
Veröffentlicht in Growth and development of the Nigerian economy (1970)

The Nigerian palm oil industry : a comment

von Purvis, Malcolm J.
Veröffentlicht in Stanford University. Food Research Institute Food Research Institute studies (1968)