Progress on drinking water and sanitation:   2012 update. 

 - Geneva :  World Health Organization,  2012. 
 - 60 p.  ill.  29 cm. 
<br/><br/><label>ISBN: </label>9789241503297   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water supply<br/>Sanitation.<br/>Drinking water<br/>Millennium development goals.<br/>Program evaluation.
<br/><br/><label>National Library of Medicine Call No.: </label>WA 670 P 2012