Dangers from color blindness in railroad employees and pilots / by B. Joy Jeffries.

  • Jeffries, B. Joy, 1853-
Date:
1878

Licence: Public Domain Mark

Credit: Dangers from color blindness in railroad employees and pilots / by B. Joy Jeffries. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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