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BAASBulletin of the American Astronomical Society
BAASBritish Association for the Advancement of Science
BAASBritish Association of Audiological Scientists
BAASBusiness and Accounting Services (University of Idaho; Moscow, ID)
BAASBelgian Association of Ambulatory Surgery (Belgium)
BAASBattalion Anti-Armor System
BAASBilling Accounting Application Service
BAASBloc Autonome d'Alarme Sonore (French: Stand-Alone Alarm Block)