00404nam a2200133Ia 4500008004100000082001600041100001800057245003800075260002500113650001000138942000700148999001700155952009800172220204s9999    xx            000 0 und d  a681.14bHEL  aHeld, Gilbert 0aIBM PC AT: Users reference manual  aNew DelhibBPBc1987  aPC AT  cBK  c39710d39710  00104070aMAINbMAINd2021-12-16l0o681.14 HELp20037r2021-12-16 00:00:00w2022-02-14yBK