TY - GEN AU - Bruening, Robert J AU - He, Minggao C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1988-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.594-14 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1988 TI - Optical radiation measurements ::high pressure sodium discharge lamp characterization for use as standards of geometrically total luminous flux ER -