TY  - RPRT
TI  - Letter Circular 906: standard fading lamp and method of calibrating lamps used in testing colorfastness to light
PY  - 1948
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 906
DO  - 10.6028/NBS.LCIRC.906
ER  -