How to Solve It Autor George Polya 26 apr 1990 Paperback Preț: 64.67 lei 92.81 lei 25-31 zile | 5-11 zile -30%
The Stanford Mathematics Problem Book Dover Publications Inc Autor George Polya et al. 27 mar 2009 Paperback Preț: 43.62 lei 53.42 lei 22-29 zile | 5-11 zile -18%