5208
5209
Polya,George
7881-
How to solve it; aspect of mathematical method
Garden City
N. Y., Doubleday
1957
253p
Doubleday anchor books, A39
2d ed
Study and teaching ، Mathematics
Problems, exercises, etc ، Mathematics
QA
11
.
P6
1957
AU
TI
TI Mathematical method
CL
CL
