World Health Organization [Geneva] <br/><br/>
Surveillance of Drinking-Water quality  World health organization, Geneva. 

 - Geneva  World Health Organization  1976 
 - 135p., ill. 23cm 
 - (World Health organization monographs series, no.63). .
<br/><br/><label>ISBN: </label>924-140063-3. 
<br/><br/><label>Dewey Class. No.: </label>628.166,  / W84S