When Is Now?Henry Humphrey
When Is Now?
Henry Humphrey · 1981
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About the book
Gives directions for making several time-keeping devices such as a sundial and water clock and discusses some ancient knowledge about measuring time.
Book details
- Year
- 1981
- Language
- English
- Publisher
- Doubleday
- Editions
- 1
- Pages
- 79
- ISBN
- 9780385132152
Data source: Wikidata