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 Date: 2007-02-01 14:22:00Astronomical instruments Clocks Orrery Scale modeling Science Clock of the Long Now Clock Time |
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| First Page | Document Content | |
|---|---|---|
Date: 2007-02-01 14:22:00Astronomical instruments Clocks Orrery Scale modeling Science Clock of the Long Now Clock Time |
Add to Reading List |
The clock of the long now