Farming systems research approach : a primer for eastern and southern Africa - Norman, D. W. (David W.); Farming Systems Programme (Botswana) (Gaborone, Botswana : Farming Systems Programme, 1994)
Includes bibliographical references (p. 136-142).
Keywords: Agricultural systems -- Research -- Africa, Eastern; Agricultural systems -- Research -- Africa, Eastern; Agricultural systems -- Research -- Botswana