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Report of the examination of 27,927 school children for color-blindness / by B. Joy Jeffries.
- Jeffries, B. Joy, 1853-
Public Domain Mark
About this work
Boston : Rockwell and Churchill, 1888.
9 pages ; 21 cm
Where to find it
Location of original
This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)