Van Valkenburg, Samuel <br/><br/>
Elements of Political Geography 
/Samuel Van Valkenburg 
 - New York  Prentice -Hall, Inc  1939 
 - xiv, 401 p. 
<br/><br/> Includes in Index 
<br/><br/><label>ISBN: </label>83654 
<br/><br/><label>Dewey Class. No.: </label>910.16  / VAN