Science and Invention, vol. 13, no. 3, July 1925

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This issue of Science and Invention contains a profile of Gernsback's famous invention, "The Isolator," a helmet used for better concentration at work.

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  • type
    Pdf
  • created on
  • file format
    pdf
  • file size
    97 MB
  • credit
    Document scan by Syracuse University Libraries
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    Public Domain
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