TY - RPRT TI - Evaluation of resistance strain gages at elevated temperatures : progress report no. 12 AU - Trumbo, J T AU - Melton, C H AU - Bloss, R L PY - 1961 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 7161 DO - 10.6028/NBS.RPT.7161 ER -