Valkenburg Samuel Van <br/><br/>
Elements of political geography 

 - 2 
 -  1954 
 - Prentice Hall Geography series .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political Geography
<br/><br/><label>Dewey Class. No.: </label>U5, J4