Tierney, Brian <br/><br/>
Gregory VII - church reformer or world monarch? 
edited by Brian Tierney, Donald Kagan and L. Pearce Williams 
 - New York :  Random House,  1967 
 - vi, 48 p. 
 - Random House historical issues series ;  7 .
<br/><br/><label>Subjects--Personal Names: </label><br/>Gregory VII, Pope,  1015-1085