How to Solve It Autor George Polya 26 apr 1990 Paperback Preț: 59.92 lei 88.56 lei 24-30 zile | 4-10 zile -32%
The Stanford Mathematics Problem Book: With Hints and Solutions Dover Books on Mathematics Autor George Polya et al. 31 ian 2009 Paperback Preț: 40.04 lei 50.83 lei 3-4 săpt. | 4-10 zile -21%
Schule des Denkens Autor George Polya et al. dec 2010 Paperback Preț: 139.27 lei 17-23 zile | 4-10 zile