The step-by step-method has been developed by Rob Brunia and Cor van Wijgerden.
Drawings in manuals and workbooks: Rupert van der Linden.
Certificate: Rupert van der Linden
German translation: Isabel Werner, Martina König, Brigitte Lütkemöller-Klei, Bart Piet Mulder, Jürgen Daniel
English translation: Ian Adams, Bert Botma, David Fitzpatrick, Galen Irwin, Kaarlo Schepel
French translation: Philippe Vukojevic, Marlies de Labaca-Bensdorp
Pieces website: Eric van der Schilden
Website: Cor van Wijgerden
Interactive diagrams: Eiko Bleicher
Webdesign: Another Site
Stappenmethode.nl
Cor van Wijgerden
info@stappenmethode.nl
Tel: 31 524 525232
Anne de Vrieslaan 1
7741 DC Coevorden
The Netherlands