000 00444 a2200253 4500
001 14471
020 _a30
041 _aeng
080 _a51
245 _aMATHEMATICAL DISCOVERY
250 _a
260 _a
260 _bWILEY, NEW YORK,
260 _c1981
300 _av.1 & 2 combined ed. 22 cm
300 _c
490 _a
100 _aPOLYA GEORGE\
700 _a
650 _a
650 _a
942 _cBK
942 _2UDC
999 _c16672
_d16672