National systems of water administration. 

 - New  York United Naitons USA      1974 
 - "vi, 183p."  cm. 
<br/><br/><label>Standard No.: </label>83875 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engneering
<br/><br/><label>Dewey Class. No.: </label>"X9(D2):27.1.N7, L4/UN"