Technology for water supply and sanitation in developing countries. 

 - Geneva :  World Health Organization (WHO) ,  1987 
 - 38p. :  ill. ;   20 cm.  
 - WHO technical report series, 742 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9241207426 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply
<br/><br/><label>Gov. Doc. Class. No.: </label>UN WHO TRS-742