Erdmann Carl <br/><br/>
Origin of the idea of crusade. 
Erdmann Carl 
 - Princeton  Princeton University Press       1977 
 - xxxvi,446p.  cm. 
<br/><br/><label>Standard No.: </label>48748 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>V5:3(Q61)'F, L7