TY - GEN AU - Ku, Harry H AU - Ku, Harry H C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1990-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.805 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1990 TI - Uncertainty and accuracy in physical measurements: ER -