|←Author Index: Wa||Otto Walterhöfer|
Articles in Popular Science Monthly
- "How the Earth Is Weighed", in Popular Science Monthly Volume 19, October 1881
- "The Mechanics of Intermittent Springs", in Popular Science Monthly Volume 21, July 1882
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.