Chhatwal , G.R.. Environmental analysis : Air,Water and Soil / G.R. Chhatwal. - New Delhi : Anmol Publications , 1989(rep1993). - 204p : ills,figs,charts ; 22cm . NULL ISBN: 8170412293 Rs.300.00 Subjects--Index Terms: ENVIRONMENTAL IMPECT ANALYSIS Dewey Class. No.: 333.714 / CHH/E