Mara Duncan <br/><br/>
Appropriate technolgy for water supply and sanitat 
Mara Duncan 
 - New York  World Bank USA         1982 
 - 50p.  cm. 
 - Wolrd Bank Transportation water and tele communicaiton .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>X9(D86).1(X).N7, M2