TY - RPRT TI - Mechanisms of fire ignition and extinguishment : sixth progress report covering period 1 January to 30 June 1959 AU - Creitz, E C PY - 1959 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 6453 DO - 10.6028/NBS.RPT.6453 ER -