Okun, Daniel Alexander. <br/><br/>
Community piped water supply systems in developing countries :  a planning manual / 
Daniel A. Okun and Walter R. Ernst. 
 - Washington, D.C. :  World Bank,  1987. 
 - xi, 249 p. :  ill. 
 - World Bank technical paper,  no. 60  0253-7494 ; .
<br/><br/><label>ISBN: </label>0821308963  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Municipal water supply--Planning.--Developing countries<br/>Waterworks--Planning.--Developing countries<br/>Water-supply engineering--Developing countries.