Letter from Jan W. Haagen-Smit (son of smog research pioneer Arie Haagen-Smit) about his work developing and testing a new oxygen electrode for Arnold O. Beckman, Inc.
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|Original file type||TIFF|
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Haagen-Smit, Jan Willem. “Letter from Jan W. Haagen-Smit to John Leonard,” October 13, 1957. Beckman Historical Collection, Box 10, Folder 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/qv33rw680.
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