000 00283nam a2200109Ia 4500
008 201121s9999 xx 000 0 und d
100 _aDirac,P.A.M.
245 0 _aBullatin of the Calcutta Mathmatical Society
260 _bCalcutta ,Mathmatical Society
300 _c375
942 _cBV
999 _c16093
_d16093