TY  - RPRT
TI  - Performance characteristics of some viscous-impingement and throw-away types of air filters 
AU  - Coblentz, Carl W
AU  - Achenbach, Paul R
PY  - 1960
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 6908
DO  - 10.6028/NBS.RPT.6908
ER  -