TY - GEN AU - Coblentz, C W AU - Watson, Thomas W AU - Achenbach, Paul R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1955-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4157 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1955 TI - Performance of the Farr Rotonamic air cleaner: ER -