TY  - RPRT
TI  - Performance tests of two "Dycon" dry-type air filters 
AU  - Robinson, Henry E
AU  - Watson, Thomas W
PY  - 1955
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 4409
DO  - 10.6028/NBS.RPT.4409
ER  -