airline flight code for Air China
• postcode for California
• Canadian army
• Taxation capital allowances
• Biochem. carbonic anhydrase
• British fishing port registration for Cardigan
• postcode for Carlisle
• Caterers' Association
• Catholic Association
• Chem. cellulose acetate
• Central America
• Physics centrifugal atomization
• Certificate of Airworthiness
• chargé d'affaires
• (Scotland ) Chartered Accountant
• (ital.) Chemical Abstracts
• British vehicle registration for Chester
• Chief Accountant
• Genetics chromosomal aberration
• chronological age
• Church Army
• Church Assembly
• Chem. cinnamic aldehyde
• citric acid
• City Architect
• City Attorney
• civil affairs
• civil aviation
• Classical Association
• clean air
• coast artillery
• College of Arms
• commercial agent
• Community Association
• Companies Act
• (USA ) Confederate Army
• Constituent Assembly
• Consular Agent
• Consumers' Association
• Med. contrast angiography
• Contributions Agency
• controlled atmosphere
• Controller of Accounts
• Cooperative Agreement
• Corps d'Armée (French: Army Corps)
• County Alderman
• County Architect
• Court of Appeal
• Croquet Association
• Crown Agent
• Cruising Association
• Commerce current assets