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1860-1869::1868::09 in date 
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Herschel11918

From:
Robert Main
To:
Sir John Herschel
Date:
[21 September 1868]
Source of text:
RS:HS 12.280
Summary:

Comments on double star observations and some papers on the subject.

Contributor:
John Herschel Project

Herschel11919

From:
Robert Main
To:
Sir John Herschel
Date:
[30 September 1868]
Source of text:
RS:HS 12.281
Summary:

About the location of several different sets of double star observations.

Contributor:
John Herschel Project
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