How to solve it new aspect of mathematical method
Polya G
How to solve it new aspect of mathematical method - 2 - New Jersey Princeton Uni Press 1957 - "xxi,253p. :ill. ;20cm."
0691023565
"Mathematics--Problems, exercises, etc."
Mathematics--Study and teaching
How to solve it new aspect of mathematical method - 2 - New Jersey Princeton Uni Press 1957 - "xxi,253p. :ill. ;20cm."
0691023565
"Mathematics--Problems, exercises, etc."
Mathematics--Study and teaching