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Astrographic Catalogue 1900.0 Greenwich Section Dec. +640 to 900: Right ascensions, declinations, and photographic magnitudes of stars. Dec. +640 to +900

Astrographic Catalogue 1900.0 Greenwich Section Dec. +640 to 900: Right ascensions, declinations, and photographic magnitudes of stars. Dec. +640 to +900

Royal Greenwich Observatory — 1914

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