George Polya Mathematical Discovery Combined Edition PB 1981

Mathematical Discovery : Volume 1 by George Polya - Hardcover 1962

How to Solve It: A New Aspect of Mathematical Method by George Polya 1990

Mathematics and Plausible Reasoning, - Paperback, by Polya George - Very Good

How to Solve it: A New Aspect of Mathematical Met... by Polya, George 0140124993

How to Solve It: A New Aspect of Mathematical Method by George Polya: Used

Mathematics and Plausible Reasoning [Two Volumes in One] by George Polya (2014)