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020 _a
022 _a
040 _aAdlib
082 _a621.391
245 _aPrinciples of data communication
250 _a
260 _aNew York
_bMcGraw-Hill
_c1968
300 _aviii,433p.
_c
500 _a
100 _aLucky, R.W.
_e
700 _a
_a
942 _cBK
653 _aData communications
952 _w2010-06-16
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_r2010-06-16
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_bUL
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_o621.391 LUC
_d2010-06-16
_70
_yBK
_aUL
999 _c24361
_d24360