Contact WOSD
We are happy to answer your questions.
However, if you want a quick answer,
ask the right person
However, if you want a quick answer,
ask the right person


Educational questions
Fred Siebers
For questions about courses, standards and procedures, etc.

Financial questions
Marije Oijnhausen
For questions about invoices, payments, membership, etc.
🏠
WOSD Head office:
Visiting address (by appointment):
Wilhelminastraat 2
9611 JW Sappemeer
The Netherlands
WOSD Hoofdkantoor
Postal address:
Rozentuin 1
7943 JZ Meppel
The Netherlands
WOSD Postadres
BUSINESS INFORMATION
WOSD COURSES