TY - GEN AU - Carl W Coblentz AU - Thomas W Watson C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1955-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4022 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1955 TI - Performance of Fram paper filters, Model CA-100PL: ER -