Book by American Gas Association,

Residential Natural Gas Market Survey, 2002 Data
Report / Survey by American Gas Association, 01/01/2004

Survey of Underground Storage of Natural Gas in the United States and Canada: 2013/2014
Report / Survey by American Gas Association, 02/01/2015

The Evolution of Underground Natural Gas Storage: Changes in Utilization Patterns
Report / Survey by American Gas Association, 01/01/2001

Book by American Gas Association, 01/01/1996

Book by American Gas Association, 01/01/1984

Gas Facts, A Statistical Record of the Gas Industry, 2009 Data
Report / Survey by American Gas Association, 03/01/2011

17th International Plastic Fuel Gas Pipe Symposium Proceedings
Conference Proceeding by American Gas Association,

Purging Manual
Handbook / Manual / Guide by American Gas Association, 09/28/2018

AGA Plastic Pipe Manual for Gas Service
Handbook / Manual / Guide by American Gas Association, 10/01/2006