TY  - RPRT
TI  - Evaluation of exit signs in clear and smoke conditions 
AU  - Collins, Belinda L
AU  - Dahir, Mubarak S
AU  - Madrzykowski, Daniel
PY  - 1990
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST IR 4399
DO  - 10.6028/NIST.IR.4399
ER  -