Advances in environmental sciences 

 - New Delhi:   Ashish Publishing House,   1993 
 - xxi, 385p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences
<br/><br/><label>Subjects--Index Terms: </label>Ecology 
<br/><br/><label>Universal Decimal Class. No.: </label>502.2/.7  / N3