Hanbook of Enviromental Science 
Govind Prasad 
 - 1st 
 - New Delhi  Discovery Publishing House PVT  2012 
 - iv, 225p.   index 
<br/><br/><label>ISBN: </label>9789350560914 
<br/><br/><label>LC Class. No.: </label>GE320 .G68 2012