000 005000a00a22002410004500
010 _aB
024 _aM
027 _qP
210 _aBleazard, G. B.
245 _aWhy Packet Switching ?
100 _aBleazard, G. B.
260 _aNCC
_bLondon
260 _c1979
300 _a174
306 _aPacket Switching
016 _a681.3 BLE
015 _a4815
999 _c4427
_d4427
650 _aComputer Science
041 _aeng
080 _a681.3