Region
- United States 18 Treffer
- Tropics 8 Treffer
- Brazil 6 Treffer
- Kenya 6 Treffer
- British Columbia 4 Treffer
- Acre 2 Treffer
- Albania 2 Treffer
- Amazon River Region 2 Treffer
- Armenia (Republic) 2 Treffer
- Azerbaijan 2 Treffer
- Bicol (Region) 2 Treffer
- Blue Ridge Mountains 2 Treffer
- California 2 Treffer
- Chimalapas Region 2 Treffer
- Chimalapas Region (Mexico) 2 Treffer
- Congo (Brazzaville) 2 Treffer
- Developing countries 2 Treffer
- European Union countries 2 Treffer
- Fraser River 2 Treffer
- Fraser River (B.C.) 2 Treffer
- Georgia (Republic) 2 Treffer
- India 2 Treffer
- Macedonia (Republic) 2 Treffer
- Mediterranean Region 2 Treffer
- Mexico 2 Treffer
- Moldova 2 Treffer
- Northeastern States 2 Treffer
- Northwest, Pacific 2 Treffer
- Ontario 2 Treffer
- Parc national de Nouabalé-Ndoki 2 Treffer
- Philippines 2 Treffer
- San Francisco Bay Area 2 Treffer
- Southeast Asia 2 Treffer
- Southern States 2 Treffer
- Tanzania 2 Treffer
- Uzbekistan 2 Treffer
- Washington (State) 2 Treffer
- West (U.S.) 2 Treffer
- Wisconsin 2 Treffer
- Yellowstone National Park 2 Treffer