The high Middle Ages, 1000-1300 / 
Ed. by Bryce Lyon. 
 - [New York] :  Collier-Macmillan Limited  The Free Press of Glencoe,  1964. 
 - VI, 273 p. ;  21 cm. 
 - Sources in Western civilization .
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Middle Ages--Sources