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

 - 2nd 
 -  1961 
<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, K0;1-1,K1