Eastern Europe :  essays in geographical problems / 
edited by George W. Hoffman 
 - London :  Methuen,  1971 
 - 502 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0416159907 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Europe, Eastern--Economic conditions--Congresses<br/>Europe, Eastern--Population--Congresses