TY - RPRT TI - Evaluating office lighting environments: second level analysis AU - Collins, Belinda L AU - Fisher, Will S AU - Gillette, Gary L AU - Marans, Robert W PY - 1989 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 89-4069 DO - 10.6028/NIST.IR.89-4069 ER -