Image: A new form of (astronomical) observing chair by Wentworth Erck
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Description: An observing chair designed and described by the astronomer Wentworth Erck.
Title: A new form of (astronomical) observing chair by Wentworth Erck
Credit: Monthly Notices of the Royal Astronomical Society, Volume 36, pages 79-80,1875
Author: Wentworth Erck
Usage Terms: Public domain
License: Public domain
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