TY - RPRT TI - Mechanisms of fire ignition and extinguishment : seventh progress report covering the period 1 July to 30 December 1959 AU - Creitz, E C PY - 1960 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 6844 DO - 10.6028/NBS.RPT.6844 ER -