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Record details

  • Physical Description: 1 online resource (1 preliminary leaf) : plates.
  • Publisher: Washington, D.C. : U.S. Dept. of Commerce, Bureau of Standards : 1940.

Content descriptions

General Note:
Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.
At head of title: U.S. Dept. of commerce, Jesse H. Jones, secretary. National bureau of standards; Lyman J. Briggs, director.
Caption title.
Subject: Photographic lenses.

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