TY - RPRT TI - Mechanisms of fire ignition and extinguishment: first progress report covering period 1 July 1956 to 31 December 1956 AU - McCamy, C S PY - 1957 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 5137 DO - 10.6028/NBS.RPT.5137 ER -