TY  - RPRT
TI  - Collaborative reference program for color and appearance : color and color difference : report no. 29
AU  - Cummings, T L
AU  - Horlick, J
PY  - 1979
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 79-1818
DO  - 10.6028/NBS.IR.79-1818
ER  -