Environmental resource conservation 

 - New Delhi:   Commonwealth Publishers,   1992 
 - v, 276p. 
<br/><br/><label>ISBN: </label>81-7169-206-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental 
<br/><br/><label>Subjects--Index Terms: </label>Resource  
<br/><br/><label>Universal Decimal Class. No.: </label>502.65  / N2