Facts
- Author
- Various
- Language
- English
- Project Gutenberg No.
- 12975
- Released on Project Gutenberg
- July 21, 2004
- Bookshelves
- The International Magazine of Literature, Art, and Science, Poetry, Essays, Letters & Speeches, Science - Physics
- Public domain in the USA
- yes
Sources: Project Gutenberg catalogue (public domain), Wikidata (CC0)