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Subject
- Administrative and political divisions2,253
- Affordable housing4
- Age13
- Age distribution (Demography)6
- Agriculture13
- Air quality4
- Air quality management20
- Air quality—Standards13
- Airport noise2
- Airports5
- Anchorage1
- Annexation (Municipal government)1
- Aquaculture1
- Aquifers3
- Asphalt1
- Atmospheric temperature4
- Autonomous soviet socialist republics1
- Basins (Geology)3
- Battlefields1
- Bays4