Trivedi, R. N. A text book of environmental sciences / R. N. Trivedi - New Delhi : Anmol publications, c1993. - x, 408 p. : 22 cm. ISBN: 8170416825 LCCN: Subjects--Topical Terms: EnvironmentBiodiversityPollution LC Class. No.: GE105 / .C53 1993 Dewey Class. No.: 363.7 / T841t