Happiness Quantified: A Satisfaction Calculus Approach Autor Bernard M. S. van Praag et al. 27 dec 2007 Paperback Preț: 409.73 lei 509.70 lei 42-47 zile -20%
Happiness Quantified: A Satisfaction Calculus Approach Autor Bernard van Praag et al. 6 apr 2004 Hardback Preț: 933.81 lei 1363.37 lei 42-47 zile -32%