Worldmark encyclopedia of the nations :  a practical guide to the geographic, historical, political, social & economic status of all nations, their international relationships, and the United Nations system. 

 - 5th ed. 
 - [New York] :  Worldmark Press : distributed in the U.S.A. and Canada by Wiley,  c1976. 
 - 5 v. : 
<br/><br/><label>ISBN: </label>0471748331 (Wiley) : 
<br/><br/><label>Dewey Class. No.: </label>910.3