Phillips, J. (1959). Agriculture and ecology in Africa: A study of actual and potential development south of the Sahara. New York: Frederick A. Praeger.
Παραπομπή Chicago StylePhillips, John. Agriculture and Ecology in Africa: A Study of Actual and Potential Development South of the Sahara. New York: Frederick A. Praeger, 1959.
Παραπομπή MLAPhillips, John. Agriculture and Ecology in Africa: A Study of Actual and Potential Development South of the Sahara. New York: Frederick A. Praeger, 1959.
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