@misc{1199591, author = {S J Treado}, title = {Illumination conditions and task visibility in daylit spaces:}, year = {1989}, month = {1989-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.88-4014}, language = {en}, }