000 00298nam a2200109Ia 45e0
008 181001s1958 xx 000 0 und d
100 _aChurchill R.V.
245 0 _aOperational mathematics
260 _bMcGraw Hill
_c1958
300 _a347
942 _2ddc
_cBK
999 _c1851
_d1851