Meanings

American Civil Liberties Union

American Academy of Neurology

American Academy of Orthopaedic Surgeons

Geological Society of America

Association of American Railroads

Association of American Medical Colleges

American Chemistry Council

American College of Surgeons

The US Air Force Academy

American Association of Public Accountants

American College of Dentists

American Psychological Association

American Water Works Association

American Petroleum Institute

American Geographical Society

American Society for the Prevention of Cruelty to Animals

American Institute of Physics

American Economics Association

American Society of Hypertension

American Automobile Association