- FondsMG 146 - W.O. Kupsch fonds
- Série organiqueJ. Audio-Visual Materials
- 20 en plus...
- PièceWOK 1-21 - Windmills pumping water to higher levels in the Netherlands
- PièceWOK 1-22 - A section of Polderland, Holland
- PièceWOK 1-23 - Extent of alluvium deposits in the Netherlands
- PièceWOK 1-24 - Distribution of petrologically similar sediments of Mio-Pliocene - the Netherlands
- PièceWOK 1-25 - Horst and graben structure of the southern Netherlands
- PièceWOK 1-26 - Relative movement of tectonic blocks in southern Netherland
- PièceWOK 1-27 - Area of the Netherlands affected by flood on 31 January, 1931
- PièceWOK 1-28 - Extent of flooding in southwestern Netherlands
- PièceWOK 1-29 - Dune erosion from gales , North of Bergen aan Zee
- 2276 en plus...