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Superior document: Annals of the Astronomical Observatory of Harvard College ...
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Published: 1886
Superior document: Annals of the Astronomical Observatory of Harvard College 16
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Published: 1877
Superior document: Annals of the Astronomical Observatory of Harvard College 10
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Published: 1880
Superior document: Annals of the Astronomical Observatory of Harvard College 12
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Published: 1892
Superior document: Annals of the Astronomical Observatory of Harvard College 15,2
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Published: 1893
Superior document: Annals of the Astronomical Observatory of Harvard College 25
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Published: 1886
Superior document: Annals of the Astronomical Observatory of Harvard College 15,1