TY - GEN AU - Davis, Joseph C AU - Achenbach, Paul R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1964-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.8522 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1964 TI - Performance characteristics of a "Ulok", model 87 BT, disposable, viscous type, synthetic fiber air filter: ER -