TY - GEN AU - Richard A Mitchell C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1986-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.1227 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1986 TI - Force calibration at the National Bureau of Standards: ER -