Barraclough, Geoffrey,   1908-1984. <br/><br/>
The crucible of Europe :   the ninth and tenth centuries in Europea n history / 
Geoffrey Barraclough. 
 - London :   Thames and Hudson,   c1976. 
 - 180 p. :   ill. ;   25 cm. 
<br/><br/>  Includes index. 
<br/><br/>Includes bibliographical references ( p. 172-174.) 
<br/><br/><label>ISBN: </label>0500250448 :   ¹4.50 
<br/><br/><label>LCCN: </label>76-358328 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Middle ages.<br/> Carolingians.<br/> Feudalism.
<br/><br/><label>Subjects--Geographic Terms: </label><br/> Holy Roman Empire.
<br/><br/><label>Dewey Class. No.: </label>940.14