Evaluation and conservation of environment  

 - Jodhpur:   Geobios International,   1981 
 - 362p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Environment  
<br/><br/><label>Universal Decimal Class. No.: </label>502/504(082.2)  / M5