John Holden Genes, crops and the environment - Cambridge Cambridge University Press 1993 - 162p John Holden; James Peacock & Tervor Williams: Genes, crops and the environment. Cambridge. Cambridge University Press, 1993. 0-521-43737-7--(581.56HOL) ENGLISH ISBN: 0-521-43737-7 Subjects--Topical Terms: Breeding Dewey Class. No.: 581.56 / HOL