000 00374nam a2200145Ia 4500
020 _a020142293X
082 _b1596
_a001.642
100 _a"Halsall, Fred"
245 0 _aData Communications, Computer Networks & Open Systems
260 _bAddison Wesley,
_aEngland
_c1996
300 _a907
944 _cBK
999 _c101588
_d101588