TY  - RPRT
TI  - Performance tests of four cleanable impingement air filters types 44 (two thicknesses), FS 304 and FS 504 : manufactured by The Farr Company Los Angeles, California
AU  - Coblentz, Carl W
AU  - Achenbach, Paul R
PY  - 1959
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 6404
DO  - 10.6028/NBS.RPT.6404
ER  -