United nations <br/><br/>
Cost estimation of water resources projects 
United nations 
 - New York,   United nations  1972 
 - ix, 298p  ill.   28 cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>water resources--Planning 
<br/><br/><label>Dewey Class. No.: </label>333.91  / UNI