air, water and soil Chhatwal, G. R. creator ed. Nagahiro, T. ed. Katyal, T. ed. Katyal, Mohan ed. Mehra, M. C. ed. Satake, M. ed. New Delhi Anmol Publications Pvt Ltd 1989 1989 204p. 22cm ECOLOGY ENVIRONMENTAL CHEMISTRY ECOSYSTEM PROCESSES 577.14 ENV 8170412293