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

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You searched for: Creators/Contributors Campbell, Leon, 1881-1951 Remove constraint Creators/Contributors: Campbell, Leon, 1881-1951 Creators/Contributors Pickering, Edward C. (Edward Charles), 1846-1919 Remove constraint Creators/Contributors: Pickering, Edward C. (Edward Charles), 1846-1919 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 Subjects Stars--Observations Remove constraint Subjects: Stars--Observations

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