TY - RPRT TI - Internal discontinuity sensor needs for steel : report of workshop July 16, 1986 AU - Wadley, H N G AU - Rogers, C D PY - 1988 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 88-3731 DO - 10.6028/NBS.IR.88-3731 ER -