Dioptry or dioptric? / by H. Knapp.

  • Knapp, Herman, 1832-1911.
Date:
[1886?]

Licence: Public Domain Mark

Credit: Dioptry or dioptric? / by H. Knapp. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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