aircrew bulletin 
air-operated circuit breaker 
Alberta Cancer Board 
Albumin Cobalt Binding 
Alert Contingency Battalion 
Alliance for the Chesapeake Bay 
America¡¦s Community Bankers 
America's Community Bankers 
Amphibious Construction Battalions 
Analysis Control Board 
Anonymous Call Blocking 
antibody-coated bacteria 
Antigua Commercial Bank 
aorto-coronary bypass 
Application Control Block 
Application Control Blocks 
APPLIED CLIMATOLOGY BRANCH 
Architectural Control Board 
Army Communications Branch 
asbestos-cement board 
Association of Certification Bodies 
Association of Certified Book-Keepers 
Association of Custom Brokers 
Ateliers et Chantiers de Bretagne 
Auckland Central Backpackers 
Australian Cricket Board 
Austrian Convention Bureaus 
Automatic Callback 
Automatic Contrast and Brightness 
Auxiliary Charcoal Bed