00293nam a2200097Ia 4500008004100000040003800041100001500079245004000094260004900134653001200183211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aGuerdan, R 0aByzantium: its triumphs and tragedy  bGEORGE ALLEN AND UNWIN LIMITEDaLONDONc1956  aHISTORY