TY  - RPRT
TI  - Analysis of mercury lamps and filter combinations for use as aviation-green lights 
AU  - Nimeroff, I
PY  - 1955
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 4449
DO  - 10.6028/NBS.RPT.4449
ER  -