TY  - RPRT
TI  - Performance test of a "Dust-Gard" throw-away type air filter 
AU  - Coblentz, Carl W
AU  - Achenbach, Paul R
PY  - 1960
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 6938
DO  - 10.6028/NBS.RPT.6938
ER  -