The Crowd Study of the Popular Mind Autor Gustave Lebon 17 feb 2009 Paperback Preț: 113.02 lei 43-57 zile
The Crowd & Extraordinary Popular Delusions and the Madness of Crowds Autor Gustave Lebon et al. 12 iul 2007 Hardback Preț: 326.92 lei 22-36 zile