Report of the examination of 27,927 school children for color-blindness
By: by B. Joy Jeffries ...
Publisher: Rockwell and Churchill, city printers
Published: 1880
Place of publication: Boston
Language: eng
Subjects: Child; Color Vision Defects; Color blindness
Notes: At head of title: School document no. 13.

On verso of t.-p.: In School committee, Boston, June 22, 1880 ... ordered to be printed as a school document.

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