000 00292nam a2200121Ia 4500
008 220201s1993 xx 000 0 eng d
082 _a621.3815
_bGRE
100 _aGreen, DC
245 0 _aDigital electronic technology
260 _bStandard Publishers
_c1993
300 _a171
942 _2ddc
999 _c85340
_d85340