Ullmann, Walter, 1910-  Ullmann, Walter, 1910- <br/><br/>
Principles of government and politics in the Middle Ages. 

 - [2nd ed.]. 
 - London :  Methuen,  [1966] 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>State, The.