Facts
- Author
- Anonymous
- Language
- Portuguese
- Project Gutenberg No.
- 19013
- Released on Project Gutenberg
- August 9, 2006
- Bookshelves
- PT Ciência e Técnica, Science - Physics, Science - Chemistry/Biochemistry, Science - Biology
- Subjects
- Science – Study and teaching
- Public domain in the USA
- yes
Sources: Project Gutenberg catalogue (public domain), Wikidata (CC0)