TY - GEN AU - Henry E Robinson AU - Thomas W Watson C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1956-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4487 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1956 TI - Performance tests of an Airmat PL-24 dry-type air filter: ER -