TY - RPRT TI - ARPA-NBS program of research on high temperature materials : reporting period January 1 to June 30, 1969 AU - Bennett, H S AU - Franklin, Alan D PY - 1970 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS TN 514 DO - 10.6028/NBS.TN.514 ER -