Guerry, Emile Maurice,  Abp. <br/><br/>
The social teaching of the Church. 

 - London  St. Paul Pub.  1961. 
 - 225 p. 
<br/><br/> Translation of : La doctrine sociale de l'glise. "Mater et magistra (on developments of Christian teaching) encyclical letter of Pope John XXIII." 
<br/><br/>Bibliography : p.[169]