World Health Organization  <br/><br/>
Guidelines for safe recreational water environments   

 - 
 - Geneva  W H O  2003 
 - 219 p.  26 cm. 
 -   .
<br/><br/>  
<br/><br/>  Water Quality, Swimming Pools 
<br/><br/><label>ISBN: </label>92 4 154580 1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Swimming Pools<br/>Water Quality
<br/><br/><label>Dewey Class. No.: </label>WA820  / WHO