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Dangers from color-blindness in railroad employés and pilots

by Jeffries, B. Joy (Benjamin Joy), 1833-1915 1878G

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Jeffries, B. Joy (Benjamin Joy), 1833-1915, Royal College of Surgeons of England

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A digitised book or periodical from a research library. Written or issued by Jeffries, B. Joy (Benjamin Joy), 1833-1915. Published 1878. Boston : Rand, Avery, printers to the Commonwealth. Catalogued under: Railroads; Color Vision Defects; Ships.

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