Chopra, Ravi. <br/><br/>
Survival lessons :   Himalayan jal sanskriti  
/ by Ravi Chopra. 
 - Dehra Doon :   People’s Science Institute,   2003. 
 - 66 p. :   col. ill. ;   29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water harvesting --India --Himachal Pradesh; Water harvesting --India --Uttaranchal.
<br/><br/><label>Dewey Class. No.: </label>333.91 SUR  / 1651