Results for "Washington (D.C.)"

 
Showing results 1 - 2 of 2 for Washington (D.C.)
  1. Patent Drawing for Abbot's Pyrheliometer

    Patent Drawing for Abbot's Pyrheliometer

    • Date: 1940?
    • Creator: Unknown
    • Creator: Unknown

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  3. Secretary Abbot Carrying the Radiometer up Mount Wilson

    Secretary Abbot Carrying the Radiometer up Mount Wilson

    • Date: c. 1930?
    • Creator: Unknown
    • Creator: Unknown

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Showing results 1 - 2 of 2 for Washington (D.C.)