Browning, Robert,  1914-1997 <br/><br/>
Byzantium and Bulgaria :  a comparative study across the early medieval frontier / 
Robert Browning. 
 - London :  Temple Smith,  1975. 
 - 232 pages :  maps ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: pages [207]-213. 
<br/><br/><label>ISBN: </label>0851170641 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Bulgaria--Foreign relations--Byzantine Empire<br/>Byzantine Empire--Foreign relations--Bulgaria<br/>Bulgaria--History--681-1018<br/>Bulgaria--History--1018-1185<br/>Bulgaria--History--1185-1393<br/>Byzantine Empire--History--527-1081<br/>Byzantine Empire--History--1081-1453
<br/><br/><label>Dewey Class. No.: </label>309.149502