TY - GEN AU - Simeroth, J W AU - Wilkerson, J C AU - Davis, J E C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1969-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.10105 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1969 TI - Field tests of an experimental model visibility meter: ER -