How to solve it;
Pólya, George, 1887-1985.
How to solve it; a new aspect of mathematical method. - 2d ed. - Garden City, N.Y., Penguin Books, 1957. - xxxv,253 p. 18 cm. - Doubleday anchor books, A93 .
57005794
Mathematics--Study and teaching.
Mathematics--Problems, exercises, etc.
Education.
QA11 / .P6 1957
21
How to solve it; a new aspect of mathematical method. - 2d ed. - Garden City, N.Y., Penguin Books, 1957. - xxxv,253 p. 18 cm. - Doubleday anchor books, A93 .
57005794
Mathematics--Study and teaching.
Mathematics--Problems, exercises, etc.
Education.
QA11 / .P6 1957
21