Results for "International Union of the History and Philosophy of Science"

1. 

   Space Science Building (SAO), Cambridge, MA

   • Date: c. 1960s
   • Creator: Smithsonian Astrophysical Observatory
   • Creator: Smithsonian Astrophysical Observatory

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   SAO Staffers at Work

   • Creator: Smithsonian Astrophysical Observatory
   • Creator: Smithsonian Astrophysical Observatory

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   Operation Moonwatch in Philippines

   • Date: 1958
   • Creator: Unknown
   • Creator: Unknown

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   Operation Moonwatch in Philippines

   • Date: 1958
   • Creator: Unknown

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   Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

   • Date: 1905
   • Creator: Unknown

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11. 

    Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

    • Date: 1905
    • Creator: Unknown

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    Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

    • Date: 1905
    • Creator: Unknown

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    Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

    • Date: 1905
    • Creator: Unknown

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    Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

    • Date: 1905
    • Creator: Unknown

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19. 

    Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

    • Date: 1905
    • Creator: Lyon, Marcus Ward 1875-1942

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21. 

    Lewis and Clark Centennial Exposition, Portland, Oregon, 1905

    • Date: 1905
    • Creator: Unknown

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23. 

    The Periodometer, a New Instrument for Analysing Solar Records

    • Date: 1930 Between 1930 and 1934

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