TY  - GEN
AU  - Polya, George
TI  - How to solve it: a new aspect of mathematical method
SN  - 9780140124966
U1  - 510.7 POL/H 
PY  - 1990///
CY  - London
PB  - Penguin Books
KW  - Mathematics -- Study and teaching
KW  -  Mathematics -- Problems, exercises, etc
ER  -