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AuthorHeiser, Arnold M. (1)Merrick, Scott (1)O'Dell, C. Robert (Charles Robert), 1937- (1)SubjectAstronomical observations (1)Astronomy (1)Astronomy -- Observations (1)Halley's comet (1)Middle School (1)
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Sixth graders (1)Stars (1)Stars -- Age (1)Stars -- Evolution (1)... View MoreDate Issued2008 (1)Has File(s)Yes (1)