Beeby Alan First ecology Ecological principles and environmental issues - 3rd - New York Oxford University Press U.S.A 2008 - xxix, 403p. cm. ISBN: 9780199560394 (pbk) 295 Standard No.: 95022 Source: 450, 05/02/2009, Bhartiya Sahitya Bhawan Textual Subjects--Topical Terms: ECOLOGY Dewey Class. No.: G:5, P8