- ArchiefMG 146 - W.O. Kupsch fonds
- ReeksJ. Audio-Visual Materials
- 1213 more...
- StukWOK 11-46 - Looking down into the pool of Geysir
- StukWOK 11-47 - The pool of Geysir
- StukWOK 11-48 - Small geyser, before artificial eruption. At Geysir
- StukWOK 11-49 - Using soap to induce eruption in small geyser
- StukWOK 11-50 - Putting soap into small geyser to induce eruption
- StukWOK 11-51 - Beginning of eruption after soaping of small geyser
- StukWOK 11-52 - Height of eruption after soaping of small geyser
- StukWOK 11-53 - Eruption of a geyser induced by adding soap
- StukWOK 11-54 - Geologists photographing eruption of geyser stimulated by soap
- 1083 more...