000 00318nam a2200133Ia 4500
008 221030s9999 xx 000 0 und d
041 _aEnglish
082 _a105.23
100 _aG. Polya
245 0 _aHow To Solve It - A New Aspect of Mathematical Method
_cby G. Polya
260 _c0
650 _aB
942 _cBK
999 _c12838
_d12838