000 00279nam a2200121Ia 4500
008 211209s1979 xx 000 0 und d
041 _aeng
082 _a621.381534 N79 VEA
100 _aVEATCH
245 _aPULSE AND SWITCHING CIRCUIT ACTION
260 _c1979
300 _a470
999 _c15036
_d15036