Rao, V.S. Principles of weed science(a reference-cum-textbook) / [by] V.S.Rao - New Delhi Oxford & IBH pub. 1992 - ix, 540 pages. Includes references, appendixes and index. ISBN: 8120401824 Subjects--Topical Terms: WeedsAgricultural pests Dewey Class. No.: 632.5 / RAO