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  1. 1
    Sunshine and cloudiness at selected stations in the United States, Alaska, Hawaii, and Puerto Rico /
    Published 1951
    Government Document Book
  2. 2
    Atlas of American agriculture : Section B,
    Published 1928
    Government Document Book
  3. 3
    Summertime safety.
    Published 2006
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    Government Document eBook
  4. 4
    Natural sunlight and Its association to aviation accidents : frequency and prevention /
    by Nakagawara, Van B.
    Published 2003
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    Government Document eBook
  5. 5
    Climate of San Diego, California /
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    Government Document eBook
  6. 6
    Normal sunshine (percentage), annual, compiled from observations at Weather Bureau stations, 1871-1908, inclusive.
    Published 1909
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    Government Document eBook
  7. 7
    Instructions for care and management of sunshine recorders.
    Published 1896
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    Government Document eBook
  8. 8
    Instructions for care and management of sunshine recorders.
    Published 1901
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    Government Document eBook
  9. 9
    Instructions for using glass electrical sunshine recorder, pattern, 1893.
    Published 1893
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    Government Document eBook
  10. 10
    Sunlight.
    Published 1927
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    Government Document eBook
  11. 11
    Sunlight in care and prevention of disease.
    Published 1929
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    Government Document eBook
  12. 12
    Filters for reproduction of sunlight and daylight and determination of color temperature.
    Published 1931
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    Government Document eBook
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