A&E: Architecture and Engineering
A*STAR: Agency for Science, Technology And Research
AAA: Agricultural Adjustment Administration
AAAST: African Association for the Advancement of Science and Technology
AABP: American Association of Bovine Practitioners
AAH: Academy on Architecture for Health
AASP: American Association of Swine Practitioners
AASRP: American Association of Small Ruminant Practitioners
AAT: Art and Architecture Thesaurus
AAV: Association of Avian Veterinarians
AAZK: American Association of Zoo Keepers
ABWAK: Association of British Wild Animal Keepers
ACIAR: Australian Center for International Agriculture Research
ACSA: Association of Collegiate Schools of Architecture
ADB: Agricultural Development Bank
ADSA: American Dairy Science Association
AFB: American Farm Bureau Federation
AFIA: American Feed Industry Association
AGORA: Access to Global Online Research in Agriculture
AHS: Agricultural History Society
AIA: American Institute of Architects
AIF: Animal Industry Foundation
AJSE: Arabian Journal of Science Engineering
ALCOM: Aquaculture for Local Community Development Programme
AMAD: activity median aerodynamic diameter
AMTD: Activity Median Thermodynamic Diameter
APHIN: Animal Productivity and Health Information Network
APHIS: Animal and Plant Health Insepection Service
APMRU: Areawide Pest Management Research Unit
ApMT: Applied Microgravity Technology
APRP: Arabian Peninsula Regional Program
APRP: Architectural Practice Research Project
ARS: Agricultural Research Service
ARTP: Agricultural Research and Training Project
ASAE: American Society of Agricultural Engineers
ASEA: American Society of Engineers and Architects
ASI: American Sheep Industry Association
ASID: American Society of Interior Designers
ASZK: Australasian Society of Zoo Keeping
ATAM: Architecture Tradeoff Analysis Method