000 00339nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aRoger L.Tokheim
245 0 _aDigital Principles
250 _a1st Ed
260 _aNew York
260 _bMcGraw Hill Company Ltd.
260 _c1979
650 _aDigital Principles
942 _cBK
999 _c12206
_d12206