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Subject (Region)
- Africa2
- Africa, Sub-Saharan1
- Alaska1
- Antarctica1
- Arctic National Wildlife Refuge1
- Arctic National Wildlife Refuge (Alaska)1
- Arctic Regions6
- Arctic regions10
- Bakken Formation1
- Cahokia Mounds State Historic Park1
- Cahokia Mounds State Historic Park (Ill.)1
- California1
- Dollar (Scotland)1
- England2
- France1
- Germantown (Philadelphia, Pa.)1
- Great Britain2
- Haiti1
- Hawaii1
- Illinois1