Author:Baltazar Mathias Keilhau

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Baltazar Mathias Keilhau
Norwegian geologist and mountain pioneer
Baltazar Mathias Keilhau


  • "Theory of Granite, and the other Massive Rocks; together with that of Crystalline Slate; proposed in Lectures in Geology, in the University of Christiania in th year 1836" in The Edinburgh New Philosophical Journal, volume 24, pages 387–403 and volume 25, pages 80–101, 263–272 (1838)

Works by this author published before January 1, 1926 are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.