Asthana, D K <br/><br/>
Environment : Problems and Solutions 

 - 2nd 
 - New Delhi  Schand  2010 
 - xix,434p. 
<br/><br/><label>ISBN: </label> RS 325.00 
<br/><br/><label>Dewey Class. No.: </label>333.7 AST,DK