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