TY  - RPRT
TI  - Procedures for precise determination of thermal radiation properties : progress report no. 21 November 1, 1963 - January 31, 1964
PY  - 1964
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 8327
DO  - 10.6028/NBS.RPT.8327
ER  -