TY - RPRT TI - Microplasticity II : microstrain behavior of normalized 4340 steel and annealed invar AU - Geil, G W AU - Feinberg, I J PY - 1969 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 9997 DO - 10.6028/NBS.RPT.9997 ER -