TY - RPRT TI - Progress report July 1 to December 31, 1952 on refrigeration and miscellaneous equipment AU - Phillips, C W AU - Karger, Henry AU - Achenbach, PR PY - 1953 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 2213 DO - 10.6028/NBS.RPT.2213 ER -