TY - GEN AU - Coblentz, Carl W AU - Achenbach, Paul R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1958-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.6250 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1958 TI - Performance tests of an automatic renewable media air filter with two filter media, Conomatic, model 3-C90 ::manufactured by Continental Air Filters, Inc. Louisville, Kentucky ER -