TY  - RPRT
TI  - Illumination conditions and task visibility in daylit spaces 
AU  - Treado, S J
PY  - 1989
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST IR 88-4014
DO  - 10.6028/NIST.IR.88-4014
ER  -