Chatterjee,B.N Cropping System : Theory and Practice / B.N Chatterjee, S. Maiti and B.K. Mandal. - 2nd ed. - New Delhi : Oxford & IBH Publishing Co. Pvt. Ltd., 1997 - xiv, 345 p. : tables, ill. figs, picture. ; 18 cm. Includes bibliographical references. ISBN: 812040419x Subjects--Topical Terms: Cropping systems. Dewey Class. No.: 631.58 / CHC