Proceedings 

 - New  York United Naitions USA      1971 
 - "ix, 202p."  cm. 
 - United Nations Water resources series .
<br/><br/><label>Standard No.: </label>83869 
<br/><br/><label>Source: </label> Reports 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engneering
<br/><br/><label>Dewey Class. No.: </label>"X9((D2):27p4,N70, L1/UN"