Color blindness in its relation to railway employees and the public
Subtitle: a paper read at the Canadian Institute, Toronto, at the regular meeting, Saturday, Feb. 9th, 1889
By: by G. Sterling Ryerson
Contributors: J.E. Bryant Co
Publisher: J.E. Bryant
Published: 1889
Place of publication: Toronto
Language: eng
Number of pages: 10
Subjects: Color blindness; Railroads; Employees; Color Vision Defects; Achromatopsie; Travailleurs des chemins de fer