V. Subramanian Textbook in Environmental Science - New Delhi Narosa Publishing House 2002 - 238p V. Subramanian: Textbook in Environmental Science. New Delhi. Narosa Publishing House, 2002. 81-7319-410-6--(363.7SUB) ENGLISH ISBN: 81-7319-410-6 Dewey Class. No.: 363.7 / SUB