000 00431nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a510.7
_bP781
100 _aPolya George
245 _aMathematical discovery : on understanding,learning,and teaching problem solving
_bV 2
260 _aLondon
_bWiley
_c1965
300 _a2V(xxiv,191p)
650 _aMathematics
942 _cBK
999 _c55604
_d55604