000 00302nam a2200133Ia 4500
001 12688
008 170722s9999 xx 000 0 und d
100 _aPolya G.
245 _aInduction and analogy in mathematics /
260 _c1954
653 _aMathematics
653 _aPhilosophy
942 _cGEN
999 _c25486
_d25486