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020 _a257734
041 _aEN
082 _223
_a621.382
_bINT
245 _aIsdn explained
_b: worldwide network and applications technology
_c/ edited by John M.Griffiths
300 _axiii, 175 p.
509 _aNS
650 4 _912128
_aNetwork
650 4 _917106
_aTelecommunication systems
700 _9103273
_aGriffiths, John M.
_eedt
942 _cS