Social Measurement Autor Donald T. Campbell et al. apr 2001 Paperback Preț: 1151.81 lei 1404.65 lei 6-8 săpt. -18%
Social Experimentation Autor Donald T. Campbell et al. 19 ian 1999 Paperback Preț: 872.60 lei 1090.75 lei 6-8 săpt. -20%