Mara, Duncan <br/><br/>
Guidelines for the safe use of wastewater and excreta in agriculture and aquaculture :  measures for public health protection / 
prepared by Duncan Mara & Sandy Cairncross. 
 - Geneva :  World Health Organization,  1989. 
 - vii, 187 p. : 
<br/><br/><label>ISBN: </label>CSMCH1014 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage
<br/><br/><label>Dewey Class. No.: </label>628.3623  / Gu