Kumar, Arvind <br/><br/>
A textbook of environmental science :  (as per UGC syallabus) / 
Arvind Kumar 
 - New Delhi:  A P H Publishing ,  2008 
 - 376 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>8176485896 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences