Ram, Mahabal. High yielding varieties of crops / Mahabal Ram. - 2nd ed / . - New Delhi : Oxford and IBH Publishing , 1986. - xvii,708p. : ill.,figs.,tables ; 22cm . Includes glossary, reference and index ISBN: 812040095X Rs. 95.00 Subjects--Index Terms: YIELDING Dewey Class. No.: 633 / RAM/H