Facts
- Author
- Philip, Alexander
- Language
- English
- Project Gutenberg No.
- 23422
- Released on Project Gutenberg
- November 9, 2007
- Bookshelves
- Philosophy, Philosophy & Ethics
- Subjects
- Knowledge, Theory of, Force and energy, Cycles
- Public domain in the USA
- yes
Sources: Project Gutenberg catalogue (public domain), Wikidata (CC0)