1. De Maya's : een nieuwe kijk op een oude cultuur.

2. The Shorter Science and Civilisation in China. An abridgement of Joseph Needham's original Text : volume 4 [The Main Sections of volume IV, Part 2 of the Major Series] : Engineers, their Status, Tools & Materials ; Basic Mechanical Principles and Types of Machines ; Land Transport ; Clock Work ; Windmills & Aeronautics

3. The Shorter Science and Civilisation in China. An abridgement of Joseph Needham's original Text : volume 5 [The First Section of volume IV, Part 3 ; The Final Section of Volume IV, Part 2 of the Major Series] : Roads ; Walls & The Great Wall ; Building Technology ; Bridges ; Hydraulic Engineering I: Control, Construction & Maintenance of Waterways ; Hydraulic Engineering II: Water-Raising Machinery & Water as a Power Source

4. Geneesmiddelenleer : voor verpleegkundig en paramedisch personeel.