Diffusion of Innovations Autor Klaus Musmann et al. 7 iul 1989 Hardback Preț: 281.15 lei 589.93 lei 6-8 săpt. -52%
Technological Innovations in Libraries, 1860-1960: An Anecdotal History Contributions in Librarianship and Information Science Autor Klaus Musmann 20 iul 1993 Hardback Preț: 625.14 lei 1029.55 lei 6-8 săpt. -39%