000			00735nam0a22002410a04500
001			000109847
005			20190423161556.0
008			s1999 xxu fnx000 000 0neng d
020			_a053495054X
035			_a2002004787
050		4	_aTK 5105 _bS529U 1999
100	1		_aShay, William A.
245	1	0	_aUnderstanding data communications and networks / _cWilliam A. Shay
250			_a2nd ed.
260			_aPacific Grove, Calif. : _bPWS, _cc1999
300			_a711 p. : _bill.
504			_aIncludes bibliographical reference and index
650		0	_aDATA TRANMISSION SYSTEMS
650		0	_aCOMPUTER NETWORKS
990			_aA47060 _bJul 12 2013 2:40PM
991			_a07 _b01 _cคอมพิวเตอร์
942			_2lcc _cBK
999			_c193893 _d193893