TY  - RPRT
TI  - Filters for the reproduction of sunlight and daylight and the determination of color temperature/ 
AU  - Gibson, K S
AU  - Davis, Raymond
PY  - 1931
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS MP 114
DO  - 10.6028/NBS.MP.114
ER  -