000 00281nam a2200121Ia 4500
100 _aRyan,Ray & Doyle,Lisa A
020 _a0-07-113620-7
942 _cBK
245 _aDgital Electronics
260 _aMcGraw - Hill, Sigapore
_c1993
082 _a621.3817 Rya/Doy
300 _axi;276
999 _c36181
_d36181