Ullmann Walter <br/><br/>
Principles of government and politics in the middle ages. 

 - London  Methuen         1961 
 - 347p.  cm. 
<br/><br/><label>Standard No.: </label>48547 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>V5:24'I, K1