Weigert, Hans Werner, <br/><br/>
Principles of political geography / 
by Hans W. Weigert ...(et. al.) 
 - New York :  Appleton-Century-Crofts,  1957. 
 - xiv, 723 p. : 
<br/><br/><label>ISBN: </label>MBS423 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geopolitics.---
<br/><br/><label>Dewey Class. No.: </label>320.12  / Pr