TY - GEN AU - Robinson, Henry E AU - Watson, Thomas W C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1953-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.2923 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1953 TI - Summary of results of performance tests of ten cleanable impingement type air filters: ER -