Region
- Mexico
- United States 111 results
- Canada 36 results
- North America 23 results
- Mexican-American Border Region 11 results
- El Chamizal (Mexico and Tex.) 9 results
- Mexique 8 results
- California 7 results
- Colorado River Delta 7 results
- Colorado River Delta (Mexico) 5 results
- Distrito Federal 5 results
- Spain 5 results
- Colorado River Watershed (Colo.-Mexico) 4 results
- Mexico City 4 results
- Southwest, New 4 results
- Rio Grande (Colo.-Mexico and Tex.) 3 results
- Texas 3 results
- Baja California Sur 2 results
- Colorado 2 results
- Colorado River (Colo.-Mexico) 2 results
- European Union countries 2 results
- New Mexico 2 results
- New Southwest 2 results
- San Diego 2 results
- America 1 results
- Argentina 1 results
- Arizona 1 results
- Australia 1 results
- California, Gulf of 1 results
- Caribbean Area 1 results
- Central America 1 results
- Chiapas 1 results
- Chiapas (Mexico) 1 results
- Chile 1 results
- Colorado River Watershed 1 results
- Cuba 1 results
- England 1 results
- Etats-Unis 1 results
- Etats-Unis d'Amérique 1 results
- États-Unis 1 results
- Guanajuato 1 results
- Guanajuato (Mexico : State) 1 results
- Guanajuato (Mexique : État) 1 results
- Guanajuato (State) 1 results
- Guanajuato (État) 1 results
- Gulf of Mexico 1 results
- Latin America 1 results
- Mexico, Gulf of 1 results
- Mexico, North 1 results
- Missouri 1 results more…