TY - GEN AU - McCamy, C S C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1955-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.3974 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1955 TI - Some optical properties of fine powder used for dry chemical fire extinguishment: ER -