AA - The Aluminum Association, Inc
AATCC - American Association of Textile Chemists and Colorists
ACI - American Concrete Institute
A.G.A. - American Gas Association
AGMA - American Gear Manufacturers Association
AIAA - American Institute of Aeronautics and Astronautics
AIA/NAS - Aerospace Industries Association of America, lnc
ANSI - American National Standards Institute
API - American Petroleum Institute
ARI - Air-Conditioning and Refrigeration Institute
ASA - Acoustical Society of America
ASHRAE - American Society of Heating, Refrigerating, and Air-conditioning Engineers
ASME - American Society of Mechanical Engineers
ASQ - American Society for Quality
ASSE - American Society of Sanitary Engineering
ASTM - American Society for Testing and Materials
AWS - American Welding Society, Inc.
AWWA - American Water Works Association