United Nations : Economic commission for Europe <br/><br/>
River basin management : proceedings of the seminar organized  by the Committee on water problems of the United Nations economic commission for Europe and held in London from 15 - 22 June 1970 

 - New York  United nations  1971 
 - vi,101p. ; 28cm. 
<br/><br/><label>Dewey Class. No.: </label>333.9162  / UN