000			00397 a2200157 4500
020			_a0932376185
082			_a621.38 _bMCN
090			_c10655 _d15101
100			_aMcnamara, John E.
245			_aTechnical aspects of data communication
250			_a2nd.
260			_aU.S.A _bDigital press _c1982 _g1982
300			_axi, 330p. _c23cm.
650			_aELECTRONICS AND COMMUNICATIONS
942			_cL
999			_c39151 _d39151