TY  - RPRT
TI  - Spectrophotometric and colorimetric study of the fading of dyed papers and cardboards under natural daylight 
AU  - Keegan, Harry J
AU  - Schleter, John C
AU  - Hall, Wiley A
AU  - Haas, Gladys M
PY  - 1955
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 4438
DO  - 10.6028/NBS.RPT.4438
ER  -