000			00460nam a2200157Ia 4500
008			220316s9999 xx 000 0 und d
020			_a9713702735
040			_cATVERC
050			_aTK 5105 .U53 1994
245		0	_aUnderstanding data communications
260			_aCainta, Rizal _bJemma, Inc. _cc1994
300			_avvii, 435 p. : ill. ; 20 cm. _c20 cm
500			_aIncludes bibliography, glossary and index.
650			_aData Communications
999			_c3026 _d3026