Sills,David L. (Ed.) <br/><br/>
International encyclopedia of social science : (Vol.13) 

 - New York  Macmillan company  1968 
 - 616p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Yk
<br/><br/><label>Dewey Class. No.: </label>Yk  / J8.13