India. National Sample Survey Organisation <br/><br/>
Drinking water, sanitation and hygiene in India  / 

 - New Delhi:  The Auth.,  1999 
 - v.p. 
 - NSS Report No. 449 (Round No. 54) January - June 1998 .
<br/><br/><label>Dewey Class. No.: </label>SC:300(54)  / NSS.449