Dixit, R.S . Cropping system research / R.S.Dixit. - New Delhi : Kalyani Publishers , 1995. - vi ,120p. : ill.,figs.,tables ; 23cm . Includes bibliography and index ISBN: Rs. 60.00 (Pbk) Subjects--Index Terms: AGRICULTURE-RESEARCH METHODOLOGY Dewey Class. No.: 630.7 / DIX/C