Riga, Peter. <br/><br/>
Peace on Earth  a commentary on Pope John's encyclical 
Peter Riga. 
 - New York  Herder and Herder  1964. 
 - 254 p. 
<br/><br/> "Pacem in terris" : p. 195-249." 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Catholic Church Pope  1958-1963  (15 may 1961)  (Joannes XXIIII)  Mater et magistra