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Subject (Region)
- United States21
- Arctic regions10
- Arctic Regions6
- Régions arctiques3
- Africa2
- England2
- Great Britain2
- Mexico2
- New York (State)2
- North Pole2
- Old Northwest2
- Africa, Sub-Saharan1
- Alaska1
- Antarctica1
- Arctic National Wildlife Refuge1
- Arctic National Wildlife Refuge (Alaska)1
- Bakken Formation1
- Cahokia Mounds State Historic Park1
- Cahokia Mounds State Historic Park (Ill.)1
- California1