Macdonald A L Agricultural technology in developing countries Macdonald A L - Rotterdam Rotterdam university press 1976 - xv, 236p cm. Bibliography: p 225-31; Appendix: p 206-24 ISBN: 9023762592 Source: General Book Subjects--Topical Terms: Agriculture Industries Dewey Class. No.: X9(J)0gF.79162.N7, L6