Dawan, Ashok. <br/><br/>
A Textbook of environmental studies / 
Ashok Dawan. 
 - 1st  ed. 
 - New Delhi :  Saurabh,  2008. 
 - v, 310  p. 
<br/><br/><label>ISBN: </label>8189005221 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental education.<br/>Environmental sciences.