TY  - RPRT
TI  - Performance tests of an automatic renewable media air filter Roll-Kleen, model 3-70 
AU  - Coblentz, Carl W
AU  - Achenbach, Paul R
PY  - 1960
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 6922
DO  - 10.6028/NBS.RPT.6922
ER  -