机读格式显示(MARC)

• 000 00565nam a2200217 a 4500

• 001 0000153447

• 003 CAL

• 005 20200811095400.0

• 008 060905s1965 xxu eng d

• 020 __ |a 0471693359

• 040 __ |c AHPUL

• 041 0_ |a ENG

• 090 __ |a 51.04Q1

• 090 __ |a O1/P781/2

• 093 __ |a O1 |2 3

• 094 __ |a 51.04Q1 |2 4

• 099 __ |a CALB022004076156

• 100 1_ |a Polya George

• 245 10 |a Mathematical Discovery |b on understanding,learning,and teaching problem solving

• 260 __ |a New York : |b John Wiley & Sons,Inc., |c 1965

• 300 __ |a 2v. 213 p. ; |c 22cm