Olf, Lillian (Browne).
Pius XI, apostle of peace /
Lillian Browne-Olf 
. - New York : Macmillan Company,  1938 
. - xiv, 257 p.  21 cm. 
<br/>К.: Бібліогр. : с. 241-244. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Pius XI  Pope  1857-1939