Raamatud Harvard College Observatory
The Draper Catalogue of Stellar Spectra: photograhed with the 8-inch Bache telescope as a part of the Henry Draper memorial
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Annual Report of the Director of Harvard College Observatory
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Annual Report of the Director of Harvard College Observatory
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Annals Of The Astronomical Observatory Of Harvard College, Volume 41
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Revised Harvard Photometry: A Catalogue Of The Positions, Photometric Magnitudes And Spectra Of 9110 Stars, Mainly Of The Magnitude 6.50, And Brig
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Annals Of The Astronomical Observatory Of Harvard College, Volume 65
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Annual Report Of The Directory Of The Astronomical Observatory Of Harvard College
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Annals Of The Astronomical Observatory Of Harvard College, Volume 12
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Annals Of The Astronomical Observatory Of Harvard College, Volume 17
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Annals Of The Astronomical Observatory Of Harvard College; Volume 26
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Annals Of The Astronomical Observatory Of Harvard College, Volume 50
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Annals Of The Astronomical Observatory Of Harvard College; Volume 26
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Annals Of The Astronomical Observatory Of Harvard College, Volume 19, Issue 1
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Annals Of The Astronomical Observatory Of Harvard College, Volume 19, Issue 1
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Annals of the Astronomical Observatory of Harvard College, Volume 31
Harvard College Observatory, College Obs
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Micrometric Measuremensts Made with the Equatorial Telescope of Fifteen Inches Aperture During the Years 1866-1881
Harvard College Observatory, College Obs
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Annals of the Astronomical Observatory of Harvard College Volume v.48 no.4
Harvard College Observatory, College Obs
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Annual Report Of The Directory Of The Astronomical Observatory Of Harvard College
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Annals of the Astronomical Observatory of Harvard College, Volume 65
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Annals of the Astronomical Observatory of Harvard College, Volume 19, Issue 1
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Annual Report Of The Directory Of The Astronomical Observatory Of Harvard College
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Annals Of The Astronomical Observatory Of Harvard College, Volume 12
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Annals of the Astronomical Observatory of Harvard College, Volume 11
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Annals of the Astronomical Observatory of Harvard College, Volume 17
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Annals Of The Astronomical Observatory Of Harvard College, Volume 50...
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Annals of the Astronomical Observatory of Harvard College, Volume 12
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Annals of the Astronomical Observatory of Harvard College, Volume 12
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Annals of the Astronomical Observatory of Harvard College, Volume 50...
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Annals Of The Astronomical Observatory Of Harvard College, Volume 50...
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Annals Of The Astronomical Observatory Of Harvard College, Volume 11
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