Natural water treatment systems for safe and sustainable water supply in the Indian context :  Saph Pani / 
edited by Thomas Wintgens, Anders Nattorp, Lakshmanan Elango and Shyam R. Asolekar. 
 - xxv, 315 pages :  illustrations ;  28 cm. 
<br/><br/>References : page 313-315. 
<br/><br/><label>ISBN: </label>9781780407104  RM816.10 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water Purification--India.<br/>Drinking Water--India.