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005 20251003125753.0
008 251003s9999 xx 000 0 und d
082 _a621.382
100 _aM.Schwartz
245 0 _aTelecommunication Networks
260 _bPearson
_aNew Delhi
_c2004
300 _a750
942 _cBK
999 _c38554
_d38554