Gas Measurement Manual Part One, Introduction to Gas Measurement (Revised)
Handbook / Manual / Guide by American Gas Association, 05/15/2023

Addendum 2 – Guide for Gas Transmission, Distribution, and Gathering Piping Systems, 2022 Edition (ANSI Z380.1-2022)
Amendment by American Gas Association, 02/01/2023

Gas Facts, A Statistical Record of the Gas Industry (2022 Edition, with 2021 Data)
Report / Survey by American Gas Association,

Residential Gas Market Survey, 2019 Data
Report / Survey by American Gas Association, 04/21/2021

Addendum 1 – Guide for Gas Transmission, Distribution, and Gathering Piping Systems, 2022 Edition (ANSI Z380.1-2022)
Amendment by American Gas Association, 06/01/2022

Errata to B109.4 Standard, Self-Operated Diaphragm-Type Natural Gas Service Regulators For Nominal Pipe Size 1-1/4 Inches (32 mm) and Small With Outlet Pressures of 2 psi (13.8 kPa) and Less (ANSI B109.4-2021)
Amendment by American Gas Association,

AGA Report No. 9 – Measurement of Gas by Multipath Ultrasonic Meters
Report / Survey by American Gas Association, 01/01/2022

Guide for Gas Transmission, Distribution, and Gathering Piping Systems, 2022 Edition (ANSI Z380.1-2022)
standard by American Gas Association, 03/01/2022

Gas Facts, A Statistical Record of the Gas Industry (2022 Edition, with 2020 Data)
Report / Survey by American Gas Association, 2022

B109.4 Standard, Self-Operated Diaphragm-Type Natural Gas Service Regulators For Nominal Pipe Size 1-1/4 Inches (32 mm) and Small With Outlet Pressures of 2 psi (13.8 kPa) and Less (ANSI B109.4-2021)
standard by American Gas Association, 10/29/2021