European Communities / Union (EUR-OP/OOPEC/OPOCE) · Pergamon Press
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| New Information Technologies in the Education Systems of EC Member States: Synthesis Report | 978-92-826-7719-3 (92-826-7719-2) | 1994 | |
| Second international science study: beschrijving van uitkomsten en analyses | 978-90-365-0048-7 (90-365-0048-6) | 1986 | Tj Plomp |
| The IEA Study of Computers in Education: Implementation of an Innovation in 21 Education Systems | 978-0-08-041935-0 (0-08-041935-6) | 1993 | T. Plomp |
J. P. · W.J. · W.P. · Willem J Pelgrum · Wouter J. Pelgrum