World Abbreviations and Acronyms
- ABAtom Bomb
- ACASTAdvisory Cwmmittee On The Application of Science and Technology To Development
- ACCIArea of Critical Community Interest
- ACEAtmospheric Chemistry Education In Global Change
- ACE-1Southern Hemisphere Marine Aerosol Characterization Experiment
- ACE-2North Atlantic Regional Aerosol Characterization Experiment
- ACH4Annual Methane (Ch4) Emission From Enteric Fermentation
- ACHPRAfrican Charter On Human and Peoples' Rights
- ADAndorra
- ADDNETAcid Deposition Data Network
- ADPAdaptive Management Plan
- ADPAsian Disasteq Preparedness Center
- AEMPAquatic Effects Monitoring Program
- AEMRPAquatic Effects Management and Response Plan
- AERI-FEPAeri Front End Processor
- AEROSATInternational Aeronautic Satellite Programme
- AGAHAnimal Health Service of Fao
- AGFUNDArab Gulf Fund for United Nations Development
- AGRAgriculture
- AGRHYMETAgronmeteorology and Operational Hydrology and Their Applicationl
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