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

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You searched for: Creators/Contributors Plassmann, Joseph, 1859- Remove constraint Creators/Contributors: Plassmann, Joseph, 1859- Digital Format Books and documents Remove constraint Digital Format: Books and documents 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--Observations Remove constraint Subjects: Variable stars--Observations
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