Purkayastha, G. <br/><br/>
Environmental studies/ 
Gautam Purkayastha. 
 - Guwahati:  Kalyani Publishers, 
 - 349 p. ;  ill. :  24 cm. 
<br/><br/> Based on UGC, Dibrugarh University, Gauhati University and Syllabus of other Indian Universities. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>8127233374 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science<br/>Environmental Studies
<br/><br/><label>Dewey Class. No.: </label>352.6  / PUR