Chawla, Shashi <br/><br/>
A textbook of environmental studies / 
Shashi Chawla 
 - New Delhi :  Tata McGraw Hill,  2012 
 - 1v. (various pagings) :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781259006388 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--Study and teaching--Textbooks<br/>Human ecology--Study and teaching--Textbooks