TY - RPRT TI - An automatic ACDC thermal voltage converter and AC voltage calibration system AU - Lentner, K J AU - Flach, D R AU - Bell, B A PY - 1984 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 84-2973 DO - 10.6028/NBS.IR.84-2973 ER -