RAJAGOPALAN R Environment and ecology A complete guide - Gurgoan LexisNexis 2016 - xli,647p cm. Bibliography: p 303-306 ISBN: 9789350357583 445.00 Source: IN2013, 07/10/2017, R K Books General Book Subjects--Topical Terms: Geography Dewey Class. No.: U287:(G:55), Q6