Guidelines for drinking-water quality / 
World Health Organisation . 
 - 2nd ed. 
 - Geneva :  WHO ,  1997. 
 - xii, 238 p. :  ill ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>92415038 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drinking water--Standards.<br/>Data collection--methods.<br/>Guidelines.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Developing countries