Conway,Gordon R. After the green revolution : sustainable agriculture for development/ Gordon R. Conway and Edward B. Barbier. - London : Earthscan Publications, 1990. - 205 p. : ill., map ; 22 cm. Includes bibliographical references and index. ISBN: 1853830356 Subjects--Topical Terms: Sustainable agriculture. LC Class. No.: S494.5.S86 / C65 1990