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Subject (Region)
- Alaska[remove]133
- Arctic National Wildlife Refuge29
- United States23
- Arctic National Wildlife Refuge (Alaska)15
- National Petroleum Reserve14
- National Petroleum Reserve (Alaska)11
- Cook Inlet8
- Trans-Alaska Pipeline (Alaska)7
- Arctic Ocean5
- North Slope4
- Alaska, Gulf of3
- Arctic regions3
- Beaufort Sea3
- North Slope (Alaska)3
- Norway3
- Prudhoe Bay3
- Shelikof Strait3
- Aleutian Islands2
- Colville River Delta2
- Cook Inlet Region2