TY - RPRT TI - Performance test of an Electro-Air electrostatic air cleaner, model 20-1 AU - Coblentz, Carl W AU - Achenbach, Paul R PY - 1960 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 6875 DO - 10.6028/NBS.RPT.6875 ER -