Erdmann, Carl  (1898-1945) <br/><br/>
The origin of the idea of crusade / 
Carl Erdmann ; translated from the German by Marshall W. Baldwin, Walter Goffart ; foreword and additional notes by Marshall W. Baldwin 
 - Princeton :  Princeton legacy library,  2019 
 - (xxxvi-446 p.) 
<br/><br/>Bibliogr. p. 373-427 
<br/><br/>
<br/><br/><label>ISBN: </label>978-0-691-65633-5 
<br/><br/><label>Dewey Class. No.: </label>956.0543