TY  - RPRT
TI  - Candlepower distribution and color characteristics of a double obstruction light 
AU  - Vaughan, Robert T
PY  - 1956
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 4542
DO  - 10.6028/NBS.RPT.4542
ER  -