Seligman, Edwin R. and Alvin, Johnson <br/><br/>
Encyclopaedia of the social sciences: Pur-Tra, Vol. XIII & XIV 

 - New York  MacMillan & Co.  1937 
 - xxii,674: xxiii,676 
<br/><br/><br/>English 
<br/><br/><label>Dewey Class. No.: </label>303  / Sel