TY  - RPRT
TI  - Circular of the Bureau of Standards no. 7 5th edition: pyrometer testing and heat measurements
PY  - 1913
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 7e5
DO  - 10.6028/NBS.CIRC.7e5
ER  -