Chitkara, M. G. Encyclopaedia of Ecology, Environment and Pollution / M. G. Chitkara. - 1st ed. - New Delhi : APH Publishing Corporation, 1998 - xii, 235 p. ; 25 cm - A Compendium of Environment Terms V-15 . Includes Index. ISBN: 8170248809 8170248957 Subjects--Topical Terms: Encyclopaedia EnvironmentPollutionEcology Dewey Class. No.: 363.703 / CHE