Library of Congress  Subject Cataloging Division <br/><br/>
Classification :  Class H : Social sciences. 

 - 3rd ed. 
 - Washington :  Govt. print. off,  1950. 
 - 613 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification--Books--General works<br/>Classification--Books--Social sciences<br/>Classification, Library of Congress