TY - GEN AU - Carl W Coblentz AU - Paul R Achenbach C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1958-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.6214 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1958 TI - Performance tests of an expansible fibrous media air filter, Flanders Expansible, no. 15 ::progress report (May 1 to October 31, 1958) QMREL-M project order no. 57-26 ER -