TY - GEN AU - Harris, Georgia L AU - Torres, Jose A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2003-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.6969r LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2003 TI - Selected laboratory and measurement practices, and procedures to support basic mass calibrations: ER -