TY  - JOUR
T1  - How do the Colour-Blind See the Different Colours? Introductory Remarks
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 31
SP  - 302
EP  - 306
PY  - 1880/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1880.0036
M3  - doi:10.1098/rspl.1880.0036
AU  - Holmgren, F.
ER  -