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Spatial Coverage
- United States[remove]28
- Mexico10
- Texas10
- Canada7
- United States.5
- Mexico.4
- Sabine River (Tex. and La.)4
- California2
- Louisiana2
- Northern boundary of the United States2
- Oregon2
- Québec (Province)2
- Southwest, New2
- Alaska1
- California.1
- Cameron County (Tex.)1
- Hidalgo County (Tex.)1
- New Mexico1
- New York (State)1
- North America1
