Rajvaidya, Neelima. Encyclopaedic dictionary of environmental science and technology / Neelima Rajvaidya and Dilip Kumar Markandey. - New Delhi : A.P.H. publishing corporation, c 2004. - Vols. ; 25 cm. V. 1-- ; 333 333 ISBN: 81-7648-420-2 Subjects--Topical Terms: Encyclopedia--Environmental sciences. Dewey Class. No.: 503 / E19