000			00395 a2200145 4500
005			20230607132832.0
050			_aTK5105 _bSha.
100			_aShay, William A.
245			_aUnderstanding data communications and networks / _cWilliam A. Shay.
501			_a6572
650			_aComputer networks.
650			_aData transmission systems.
260			_bPWS Pub. Co. _c1995.
942			_cBK _oTK5105 Sha.
999			_c2989 _d2989