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Subject (Region)
- United States18
- Africa3
- Alaska3
- Arizona3
- Australia3
- Canada3
- European Union countries3
- North America3
- Brazil2
- Central America2
- Europe2
- New Mexico2
- Africa, Sub-Saharan1
- Afrique1
- America1
- Anchorage1
- Callabonna, Lake, Region (S. Aust.)1
- Chaco Canyon1
- Chaco Culture National Historical Park1
- Chaco Culture National Historical Park (N.M.)1