API MPMS Chapter 14.3 Part 1
API MPMS Chapter 14.3 Part 1
Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids - Concentric, Square-edged Orifice Meters - Part 1: General Equations and Uncertainty Guidelines, Fourth Edition, Includes Errata, July 2013
Handbook / Manual / Guide by American Petroleum Institute, 09/01/2012