Pío XI [CIAS] <br/><br/>
Quadragesimo Anno 

 - 48p. 
 - New York :  Missionary Society;  1939 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encíclicas<br/>Doctrina social de la Iglesia
<br/><br/><label>Universal Decimal Class. No.: </label>261.6:348.12