Conkin Paul K. State of the earth environmental challenges on the road to 2100 - Delhi University Press India 2007 - xii, 308p. cm. ISBN: 978 81 7371 592 1 (pbk) 400 Standard No.: 233,742 Source: DU006, 06/02/2008, Independent Publishers Group Textual Subjects--Topical Terms: BIOLOGY Dewey Class. No.: G:55.P, P7