TY - GEN AU - Douglas, C A AU - Simeroth, J W AU - Davis, J E C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1954-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.3046 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1954 TI - Visual Landing Aids Field Service Operation ::progress report for the period December 1, 1952 to November 30, 1953 ER -