TY - RPRT TI - Field service test model : computer-controlled U system. Operations manual and software operating system appendices for the automated system. volume II. AU - Gray, K M AU - Ellis, J R PY - 1973 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 73-235 DO - 10.6028/NBS.IR.73-235 ER -