@INBOOK {TARAWALI:2002, title = {The role of the farmer as a codeveloper and adopter of green manure cover crops for sustainable agricultural production in West and Central Africa}, author = {Tarawali, G. and Douthwaite, B. and De Haan, N. and Tarawali, S. }, year = {2002}, type = {Natural resources management in African Agriculture: understanding and improved current practices}, pages = {65--76}, publisher = {Wallingford, UK: CABI}, }