TY - GEN AU - Hughes, E E AU - Mandel, J C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1989-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.81-2227r1989 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1989 TI - A procedure for establishing traceability of gas mixtures to certain National Institute of Standards and Technology SRM's: ER -