De Blij Herm J <br/><br/>
Systematic political geography 

 - 4 
 - New York  John Wiley          1941 
 - xii;617p  cm. 
<br/><br/> Bibliography at the end of each chapter 
<br/><br/><label>ISBN: </label>0471635839 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>U5, K7;L3/TD3