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Herschel12141

From:
Sir John Herschel
To:
Robert Main
Date:
[30 January 1869]
Source of text:
RS:HS 24.248
Summary:

Thanks RM for his offer [see RM's 1869-1-26]; wishes astronomers would develop an accepted system of indicating the quality of observations.

Contributor:
John Herschel Project
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