000			00293nam a2200121Ia 4500
008			230416s9999||||xx |||||||||||||| ||und||
020			_a471508772
050			_aTK5105 .F577 1990
100			_aFitzGerald, Jerry,
245		0	_aBusiness data communications :
260			_c1990
942			_2lcc _cBK
999			_c4350 _d4350