Langer, R. H. M. 1921- Agricultural plants / R. H. M. Langer & G. D. Hill ; illustrations by Karen Mason. - 2nd ed. - Cambridge [England] ; New York : Cambridge University Press, 1991. - xiii, 387 p. : ill. ; 24 cm. Includes bibliographical references and indexes. ISBN: 0521405459 0521405637 (pbk.) LCCN: 91002246 Subjects--Topical Terms: Crops. LC Class. No.: SB 91 / .H55 1991 Dewey Class. No.: 631