TY - GEN AU - John D Wright AU - Aaron N Johnson AU - Michael R Moldover AU - Gina M Kline C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2004-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.250-63 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2004 TI - NIST measurement services ::gas flowmeter calibrations with the 34 L and 677 L PVTt standards ER -