TY  - RPRT
TI  - Optical radiation measurements : the 1973 NBS scale of spectral irradiance
AU  - Saunders, R D
AU  - Shumaker, J B
PY  - 1977
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 594-13
DO  - 10.6028/NBS.TN.594-13
ER  -