TY  - RPRT
TI  - Effects of air mass and integration methods on results for optical property measurements of solar cover plate and absorber materials 
AU  - Roberts, Willard E
AU  - Masters, Larry W
AU  - Clark, Elizabeth J
PY  - 1982
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2448
DO  - 10.6028/NBS.IR.81-2448
ER  -