Chitkara, M. G. Encyclopaedia of Ecology, Environment and Pollution / M. G. Chitkara. - 1st ed. - New Delhi : APH Publishing Corporation, 1998 - xvi, 215 p. ; 25 cm - Environmental Concerns and Peace V-2 . Includes Index. ISBN: 8170248809 8170248825 Subjects--Topical Terms: Encyclopaedia EnvironmentPollutionEcology Dewey Class. No.: 363.703 / CHE