How to solve it :
Polya, George, 1887-
How to solve it : a new aspect of mathematical method / G. Polya. - 2nd ed. - Printice Hall : University Press, 1971. - xxi,253 p. : illus. ; 21 cm. - Princeton paperbacks ; 246 .
Includes bibliographical references.
Open access.
79160544
Mathematics--Study and teaching.
Mathematics--Problems, exercises, etc.
How to solve it : a new aspect of mathematical method / G. Polya. - 2nd ed. - Printice Hall : University Press, 1971. - xxi,253 p. : illus. ; 21 cm. - Princeton paperbacks ; 246 .
Includes bibliographical references.
Open access.
79160544
Mathematics--Study and teaching.
Mathematics--Problems, exercises, etc.