Practical Sampling Applied Social Research Methods, nr. 21 Autor Gary T. Henry 23 oct 1990 Paperback Preț: 641.05 lei 754.18 lei 43-57 zile -15%
Graphing Data: Techniques for Display and Analysis Applied Social Research Methods, nr. 36 Autor Gary T. Henry 9 ian 1995 Hardback Preț: 712.65 lei 869.09 lei 43-57 zile -18%