How to solve it : A new aspect of mathematical method /
Polya, G.
How to solve it : A new aspect of mathematical method / G. Polya. - 2nd. ed. - USA : Penguin Books, 1990. - xxxix, 253 p. 20 cm.
9780140124996 (pbk.)
QA 11 / .P6 1990
How to solve it : A new aspect of mathematical method / G. Polya. - 2nd. ed. - USA : Penguin Books, 1990. - xxxix, 253 p. 20 cm.
9780140124996 (pbk.)
QA 11 / .P6 1990