Titles written by Helge B.J. Karlsen:
Number of documents found: 2
- Helge B.J. Karlsen
Title: Astrologie und Zeitmessung vor 400 Jahren
Parent Document ID: 1758 - Parent Document Title: Schriften des Historisch-Wissenschaftlichen Fachkreises "Freunde alter Uhren" Band 21
Edition: 21
Page or pages: 39
BHM No: 12856 - Helge B.J. Karlsen
Title: Differensialprinsippet. En historik oversikt.
SubTitle: [in Volund 1978]
Keywords:
Other Keywords: differential gear
Edition: 1978
Page or pages: 37
BHM No: 14806
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