TY  - BOOK
AU  - Davies,A.M.Hudson
AU  - Pierce,W.O'd.
AU  - Myers,Charles S.
TI  - The selection of colour workers: being a research into the practical methods of measuring the ability to discriminate fine shades of colour 
U1  - 152.1072 
PY  - 1934///
CY  - London
PB  - Sir ISAAC Pitman
KW  - Color vision
ER  -