TY - GEN AU - Keegan, Harry J C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1967-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.9052 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1967 TI - Infrared optical measurements::progress and status as of August 13, 1966 ER -