Mara,Duncan <br/><br/>
Guidelines for the Safe use of Wastewater and Excreta in Agriculture and Aquaculture  
Duncan Mara 
 - Jain Bhawan  CBS   1991 
 - 187p. 
<br/><br/> P.B 
<br/><br/><label>Dewey Class. No.: </label>628.168 MAR