000			00317nam a2200145Ia 4500
003			IN-KoSCC
008			211107s9999 000 0 eng
082			_a518.1-51
100	1		_aPolya,G
245	1		_aPatterns of plausible inference
260			_c1954
300			_avol.2.
653			_aMathematics
942			_cBK
999			_c33558 _d33558