000 00271nam a2200109Ia 4500
008 201201s9999 xx 000 0 und d
082 _a513.92
100 _aJOHUSTOON, J.
245 0 _aRAPID METHODS IN ARITHMATIC
260 _bLONDON, SIR ISSAC PITMAN
_c1958
942 _cOB
999 _c16582
_d16582