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Showing 1 - 2 results of 2 for search '"Astronomical observations"', query time: 0.02s Refine Results
  1. 1
    Advancing variable star astronomy the centennial history of the American association of variable star observers
    by Williams, Thomas R
    Published 2011
    Subjects: “...Astronomical observations...”
    Printed Book
  2. 2
    Patricia L Through the telescope
    by Barnes,svarney
    Published 2000
    Subjects: “...Amateur astronomer Observing comets...”
    Printed Book
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