AGA Report No. 6, Field Proving of Gas Meters Using Transfer Methods, First Edition, Includes Errata (2013)
Report / Survey by American Gas Association, 03/01/2013

2009 Operating Section Proceedings , Volumes 1-3
Conference Proceeding by American Gas Association, 06/01/2010

AGA Report No. 7, Measurement of Natural Gas by Turbine Meter (2006)
Report / Survey by American Gas Association, 01/01/2006

Book by American Gas Association, 01/01/1992

2011 Operating Section Proceedings , Volumes 1-3
Conference Proceeding by American Gas Association, 12/01/2011

Gas Facts, 2003, A Statistical Record of the Gas Industry, 2002 Data
Report / Survey by American Gas Association, 01/01/2004

Gas Facts, A Statistical Record of the Gas Industry
Report / Survey by American Gas Association, 2018

Book by American Gas Association, 01/01/2007

Gas Facts, A Statistical Record of the Gas Industry
Report / Survey by American Gas Association, 02/01/2017

AGA Report No. 9 – Measurement of Gas by Multipath Ultrasonic Meters
Report / Survey by American Gas Association, 07/31/2017