Toynbee, Arnold,  1889-1975 <br/><br/>
Constantine Porphyrogenitus and his world / 
[by] Arnold Toynbee. 
 - London ;  New York :  Oxford University Press,  1973. 
 - xix, 768, [5] pages :  illustrations, maps ;  25 cm. 
<br/><br/>Bibliography: pages [699]-712. 
<br/><br/><label>ISBN: </label>019215253X 
<br/><br/><label>Subjects--Personal Names: </label><br/>Constantine Emperor of the East  905-959 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Byzantine Empire--Civilization--527-1081<br/>Byzantine Empire--Foreign relations--527-1081<br/>Byzantine Empire--Economic conditions
<br/><br/><label>Dewey Class. No.: </label>949.5032