ACA

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ACA Telecom. adjacent-channel attenuation
• advanced combat aircraft
• Agricultural Cooperative Association
• American Camping Association
• American Canoe Association
• Chem. ammoniacal copper arsenate
• Anglers' Cooperative Association
• Arts Council of America
• Associate of the Institute of Chartered Accountants
• Association of Consulting Actuaries
• Australian Consumers' Association
• Australian Council for Aeronautics