Pope Leo XIII. <br/><br/>
The Great Encyclical Letters of Pope Leo XIII :  Plus Other Documents / 
Pope Leo XIII. 
 - Illinois :  Tan Books and Publishers,   1995. 
 - x, 580 p. 
<br/><br/><label>ISBN: </label>0895555298 
<br/><br/><label>Dewey Class. No.: </label>262.91  / LEO