Sharma, KB. <br/><br/>
Priyavaraniya adhayan :  environment studies / 
By KB Sharma, KK Singh and Parvin Kumar. 
 - 1st Ed. 
 - New Delhi :  Shiv Hari Prakshan,  2013. 
 - 127p. ;  00 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENVIRONMENTAL SCIENCE.
<br/><br/><label>Dewey Class. No.: </label>363  / SHA