000			00405nam a2200181Ia 4500
008			200428s9999||||xx |||||||||||||| ||und||
020			_c225
040			_aMAIN
041			_aEnglish
082			_a621.382 _bMAR
100			_aMartin, James
245			_aTelecommunications and the computers
250			_a3rd ed.
260			_bP.H.I. _c2000
300			_a720p.
650			_aELECTRONICS
942			_cGB
999			_c1744 _d1744