TY  - RPRT
TI  - Letter Circular 395: preparation and colorimetric properties of a magnesium-oxide reflectance standard
PY  - 1933
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 395
DO  - 10.6028/NBS.LCIRC.395
ER  -