Gupta, O.P. Modern Weed Management with Special Refernce to Agriculture in the Tropics and Subtropics. : a tecxtbook and Manual / Modern Weed Management O.P. Gupta - Bikaner : Mrs. Saraswati, c1998. - xxi, 488 p. : ill ; 25 cm. Includes index. ISBN: 8187167084 Subjects--Topical Terms: Agriculture. Weed --Control. Dewey Class. No.: 632.5 / GUP 1998