TY - GEN AU - Hunt, Charles M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1966-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.9332 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1966 TI - Performance test of model HP-2A dry type replaceable filter: ER -