UNESCO <br/><br/>
Proceedings of the Ankara symposium on arid zone h 
UNESCO 
 -  1953 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology
<br/><br/><label>Dewey Class. No.: </label>U22p.1, J3-;1