Langer.William. <br/><br/>
An encyclopedia of world history. 

 - ed. 
 - Boston :  Houghton,  1968. 
 - 1504  p. ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label> $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>encyclopedia of world history.