000 00421nam a2200169Ia 4500
008 160902s9999 xx 000 0 und d
020 _a0-201-42293-X
040 _cPK-GjGUL
082 _a004.6
_bHAL-D
100 _a"Halsal, Fred"
245 0 _a"Data communications, computer networks and open systems"
250 _a4th ed
260 _aU.S.A.
_bAddison Wesley
_c1996
300 _a907
546 _aEng.
942 _cBK
999 _c597
_d597