Atayi, E.A. Survey of food crop farming systems in the Zapi-Est, East Cameroon. ICTA / ONAREST, 1980 - (Ibadan : International Institute of Tropical Agriculture), (1981) - 94 p LCCN: 22273 Subjects--Topical Terms: CamerĂșn--Agricultura.Sistemas de cultivo. Dewey Class. No.: 631.5 / A8