TY - RPRT TI - Performance tests of an AAF Co. multi-duty self-cleaning automatic air filter Model B (type MS panels) AU - Robinson, Henry E AU - Watson, Thomas W PY - 1954 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 3730 DO - 10.6028/NBS.RPT.3730 ER -