TY - GEN AU - Charles M Hunt AU - Paul R Achenbach C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1965-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.8674 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1965 TI - Performance test of "Kleen-Air" glass fiber automatic renewable filter media: ER -