What does AA stand for?

MLA style: "AA." Acronym Finder . 2012. AcronymFinder.com 26 May. 2012 <a href="http://www.acronymfinder.com/All-Aboard-(IBM-model-railroad-interface)-(AA).html">http://www.acronymfinder.com/All-Aboard-(IBM-model-railroad-interface)-(AA).html
Chicago style: Acronym Finder . S.v. "AA." Retrieved May 26 2012 from <a href="http://www.acronymfinder.com/All-Aboard-(IBM-model-railroad-interface)-(AA).html">http://www.acronymfinder.com/All-Aboard-(IBM-model-railroad-interface)-(AA).html
APA style: AA. (n.d.) Acronym Finder. (2012). Retrieved May 26 2012 from <a href="http://www.acronymfinder.com/All-Aboard-(IBM-model-railroad-interface)-(AA).html">http://www.acronymfinder.com/All-Aboard-(IBM-model-railroad-interface)-(AA).html

All Aboard (IBM model railroad interface)

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Alaska-Anchorage (University of Alaska Anchorage) Albuquerque Academy (New Mexico) Alcoa Aluminum (stock symbol) Alcohol Abuse alcohol-preferring Alcoholics Anonymous Aldosterone Antagonist Alert Areas Alerting Authority Algorithmic Architecture		All Advantage All After All-American Allah Akhbar (Arabic: God is Great) Alleged Assault Allergic Asthma Allied Affairs Alopecia Areata Alsthom Atlantique (French electric company) Alt Advancement (gaming rank promotion)