World Health Organization , WHO  <br/><br/>
WHO guidelines for the safe use of wastewater, excreta and greywater   

 - 
 - Geneva  WHO  2006 
 - 140 p.  20 cm. 
 - wastewater and excreta use in aquaculture  3 .
<br/><br/>  
<br/><br/>  water supply - legislation, water pollution 
<br/><br/><label>ISBN: </label>9241546840 
<br/><br/><label>Subjects--Topical Terms: </label><br/>water pollution<br/>water supply - legislation
<br/><br/><label>Dewey Class. No.: </label>WA675  / WHO