British Library of Political and Economic Science 

 -  1931 
 -  V12. 1956-1962. A-F .
<br/><br/><label>Standard No.: </label>141911 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"Sigma a14,23,N3, G1.12/BB"