TY - RPRT TI - Mechanisms of fire ignition and extinguishment : twelfth progress report covering the period 1 May to 30 July 1962 AU - Creitz, E C PY - 1962 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 7577 DO - 10.6028/NBS.RPT.7577 ER -