Chitkara, M. G Encyclopaedia of ecology, environment and pollution : a compendium of environment terms M.G. Chitkara - 1st ed - New Delhi A. P. H. Pub. Corp 1998 - xii, 235 p. ; 26 cm Includes bibliographical references and index ISBN: 8170248957 Subjects--Topical Terms: Environmental protectionPollution--Environmental aspects Dewey Class. No.: 577.03 CHI