Ngugi, D. East African Agriculture : a textbook for secondary schools / D. Ngugi, P.K. Karau, W. Nguyo. - 3rd ed. - London : Macmillan, 1990. - vi, 330 p. : ill ; 25 cm. ISBN: 0333488644 Subjects--Topical Terms: Agriculture-- Africa, East. Dewey Class. No.: 630.9676