Chopra., S.L. Kanwar, J.S. Analytical agricultural chemistry / [by] S.L.Chopra, J.S.Kanwar - 4th ed. - Ludhiana Kalyani pub. 1999 - xv, 500 pages Include index ISBN: 817096444X Subjects--Topical Terms: Agricultural chemistry Dewey Class. No.: 630.24 / CHO