TY - RPRT TI - Gas flowmeter calibrations with the working gas flow standard AU - Wright, John D AU - Kayl, Jean-Philippe AU - Johnson, Aaron N AU - Kline, Gina M PY - 2009 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 250-80 DO - 10.6028/NIST.SP.250-80 ER -