TY - GEN AU - Georgia L Harris C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2019-05-01 04:05:00 DO - https://doi.org/10.6028/NIST.IR.6969-2019 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2019 TI - Selected Laboratoryand measurement practices and procedures to support basic mass calibrations::2019 Edition ER -