TY  - RPRT
TI  - A field evaluation of the relative brightnesses of eight types of runway marking materials 
AU  - Vaughan, R T
AU  - Douglas, C A
PY  - 1959
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 6549
DO  - 10.6028/NBS.RPT.6549
ER  -