Telespectroscope, constructed for the Lick Observatory by J. A. Brashear, Allegheny [Pa., U.S.A.] (titre original)

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inconnu, “Telespectroscope, constructed for the Lick Observatory by J. A. Brashear, Allegheny [Pa., U.S.A.] (titre original),” Bibliothèque numérique - Observatoire de Paris, consulté le 3 mai 2024, https://bibnum.obspm.fr/ark:/11287/2Xq9d.