Facts
- Author
- Various
- Language
- English
- Project Gutenberg No.
- 13939
- Released on Project Gutenberg
- November 3, 2004
- Bookshelves
- Scientific American, Science - Earth/Agricultural/Farming, Engineering & Technology, Health & Medicine
- Subjects
- Science – Periodicals
- Public domain in the USA
- yes
Sources: Project Gutenberg catalogue (public domain), Wikidata (CC0)