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  1. 1
    by Espenak, Fred
    Published 1997
    Government Document Microform Book
  2. 2
    by Espenak, Fred
    Published 1999
    Government Document Book
  3. 3
    by Espenak, Fred
    Published 2001
    Government Document Book
  4. 4
    by Espenak, Fred
    Published 2002
    Get full text
    Government Document Book
  5. 5
    by Rubincam, David Parry
    Published 1984
    Government Document Microform Book
  6. 6
    by Espenak, Fred
    Published 2007
    Get full text
    Government Document eBook
  7. 7
    by Espenak, Fred
    Published 2008
    Get full text
    Government Document eBook
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