Expeditions and Discoveries Sponsored Exploration and Scientific Discovery in the Modern Age

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You searched for: Creation Date 1907 Remove constraint Creation Date: 1907 Creators/Contributors Campbell, Leon, 1881-1951 Remove constraint Creators/Contributors: Campbell, Leon, 1881-1951 Place Of Origin Cambridge, Mass Remove constraint Place Of Origin: Cambridge, Mass Repository John G. Wolbach Library, Harvard-Smithsonian Center for Astrophysics Remove constraint Repository: John G. Wolbach Library, Harvard-Smithsonian Center for Astrophysics Subjects Variable stars Remove constraint Subjects: Variable stars

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