TY  - BOOK
AU  - Polya,George
TI  - Mathematical discovery: : an understanding, learning and teaching problem solving
AV  - QA43.P62 
PY  - 1965///
CY  -  :New York
PB  - John &Wiley
KW  - Mathematical
KW  - Problems
KW  - exercises
KW  - Problem solving
N1  - Includes bibliographical references
ER  -