TY - RPRT TI - Performance tests of a cleanable viscous-impingement air filter, model no. 914 M-V type Ezkleen : manufactured by Research Products Corporation Madison, Wisconsin AU - Coblentz, Carl W AU - Achenbach, Paul R PY - 1962 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 7515 DO - 10.6028/NBS.RPT.7515 ER -