File:A new form of (astronomical) observing chair by Wentworth Erck.jpg
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Summary
| Description |
English: An observing chair designed and described by the astronomer Wentworth Erck. |
| Date | |
| Source | Monthly Notices of the Royal Astronomical Society, Volume 36, pages 79-80,1875 |
| Author | Wentworth Erck |
Licensing
|
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:49, 19 December 2017 | | 562 × 330 (28 KB) | Dm4244 | User created page with UploadWizard |
File usage
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_observing_chair_by_Wentworth_Erck.jpg){kind=link}