International Encyclopedia of the Social Science 

 - London:  Pub.Collier Macmillan  0 
 - 820 p. 
<br/><br/><label>ISBN: </label>28956907 
<br/><br/><label>Subjects--Index Terms: </label>International Encyclopedia of the Social Science. vol. 18. Complete and Unabridged. 
<br/><br/><label>Dewey Class. No.: </label>O32  / I-61