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By: Draper, Henry,Edition:Publication info: Washington, Smithsonian institution, 1864Volume:Series:Holding Institution: University of California LibrariesSubjects: Astronomical photography Astronomy Reflecting telescopesBHL Collections:
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By: Draper, Henry, - Ritchey, G. W.Edition:Publication info: Washington, Smithsonian Institution, 1904Volume:Series:Holding Institution: University of California LibrariesSubjects: Astronomical photography Mirrors Reflecting telescopesBHL Collections: