TY - RPRT TI - Cryogenic design and safety review NASA-Langley Research Center 0.3 meter transonic cryogenic tunnel AU - Voth, R O AU - Strobridge, T R PY - 1977 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 77-857 DO - 10.6028/NBS.IR.77-857 ER -