Guidelines for drinking - water quality: Recommendations 

 - Geneva  World Health Organization  1993 
 - 188p.  x 
<br/><br/> Book 
<br/><br/><br/>Eng. 
<br/><br/><label>ISBN: </label>924154460 
<br/><br/><label>National Library of Medicine Call No.: </label>WA 675