Chhatwal, G.R. <br/><br/>
Enviornmental Analysis 
/by G.R. Chhatwal 
 - New Delhi:  Anmol Publications PVT LTD;  1989. 
 - 204p. 
<br/><br/><label>ISBN: </label>81-7041-229-3 
<br/><br/><label>Dewey Class. No.: </label>363.7  / CHH/E