TY  - RPRT
TI  - Circular of the Bureau of Standards no. 478: colorimetry
AU  - Judd, Deane B
PY  - 1950
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 478
DO  - 10.6028/NBS.CIRC.478
ER  -