Joshi,  P. C. <br/><br/>
A text book of environmental science / 
P. C. Joshi and Namita Joshi. 
 - New Delhi :  A.P.H.,  c 2009. 
 - vi, 308 p. ;  22 cm. 
<br/><br/>Bibliography : p. 307-308. 
<br/><br/>318  318 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science.
<br/><br/><label>Dewey Class. No.: </label>333.7 / J776t