Report of the examination of 27,927 school children for color-blindness (1880)
Jeffries, B. Joy (Benjamin Joy), 1833-1915 · Boston : Rockwell and Churchill · leaf 0
COLL. CABCHOOL DOCUMENT NO. 13. REPORT OF THE EXAMINATION OF 27,927 SCHOOL CHILDEEN ^^^^^ FOR COLOK-BLmDI^ESS, BY B. JOY JEFFRIES, A.M., M.D. … BOSTON : ROCKWELL AND CHURCHILL, CITY PRINTERS. No. 39 ARCH STREET. 1 8 80.
Color Vision Defects · Child
Internet Archive · U.S. National Library of Medicine · Public domain (published before 1931). Free to use for anything.
