Research in Chemical Engineering, TU Delft (1971)
Writing school books on Physics, Chemistry, Energy
General management of trade and educational publishers,
last companies: Wolters-Noordhoff BV, Wolters Kluwer Algemene Uitgeverijen,
Board of Stichting Lezen (Amsterdam)
Board of Stichting Marktonderzoek Boekenvak (SMB)
Board of Ververs Foundation
Board of Stichting Radio Tynaarlo
DJ of Jazz Hour & Jazz Time pgms at local radio stations
Tenor saxophonist - Mainstream Jazz, Swing & Latin Jazz