Author:Carl von Littrow
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Articles in Popular Science Monthly
- "On the Backwardness of the Ancients in Natural Science", in Popular Science Monthly Volume 9, August 1876
Works by this author published before January 1, 1923 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.