Powers William E <br/><br/>
Aerial photo interpretation of land forms and rura 
Powers William E; Kohn Clyde F 
 -  1959 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography
<br/><br/><label>Dewey Class. No.: </label>U18:M95(D:28), J9