00283nam a2200109 a 450000500170000002000150001708200150003210000220004724500360006926000460010530000220015120251203110104.0  a0804731632  a949.5bTRE  aTreadgold, Warren  aByzantium and its army 284-1081  aStanfordbStanford University Pressc1995  axii,250p.c23 cm.