TY - RPRT TI - Proceedings, U.S. Department of Commerce Public Workshop on Critical Material Needs in the Aerospace Industry, February 9-10, 1981 AU - Wachtman, John B PY - 1981 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 81-2305 DO - 10.6028/NBS.IR.81-2305 ER -