Guidelines for drinking-water quality. 

 - 4th ed. 
 - Geneva :  World Health Organization,  2011. 
 - xxiii, 541 pg. :  ill. ;index 
<br/><br/><label>ISBN: </label>9789241548151 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drinking water<br/>Water quality<br/>Water
<br/><br/><label>LC Class. No.: </label>TD215  / .W67