Report of the examination of 27,927 school children for color-blindness / by B. Joy Jeffries.
- Jeffries, B. Joy (Benjamin Joy), 1833-1915.
- Date:
- 1880
Licence: Public Domain Mark
Credit: Report of the examination of 27,927 school children for color-blindness / by B. Joy Jeffries. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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