Asthana, D.K. Meera Asthana Environment: Problems and Solutions / by D.K. Asthana - New Delhi : S. Chand and Company, 2006 - XIX, 434 p. ISBN: 81-219-1654-2 Subjects--Topical Terms: Biology Subjects--Facted Index Terms: Environment Dewey Class. No.: 577 / AST-E