Region
- United States 48 results
- Africa 12 results
- Tropics 10 results
- Europe 8 results
- Africa, Sub-Saharan 4 results
- California 4 results
- Cameroon 4 results
- Ethiopia 4 results
- Great Britain 4 results
- India 4 results
- Kenya 4 results
- Africa, Eastern 2 results
- Africa, Southern 2 results
- Albania 2 results
- Armenia (Republic) 2 results
- Asia 2 results
- Azerbaijan 2 results
- Bicol (Region) 2 results
- Canada 2 results
- Costa Rica 2 results
- Developing countries 2 results
- England 2 results
- Europe, Western 2 results
- European Union countries 2 results
- Georgia (Republic) 2 results
- Ghana 2 results
- Greece 2 results
- High Plains (U.S.) 2 results
- Italy 2 results
- Jordan River Valley 2 results
- Macedonia (Republic) 2 results
- Manitoba 2 results
- Mediterranean Coast (Israel) 2 results
- Middle East 2 results
- Middle West 2 results
- Moldova 2 results
- New Jersey 2 results
- New Spain 2 results
- New York (State) 2 results
- Oceania 2 results
- Palestine 2 results
- Palouse River Valley (Idaho and Wash.) 2 results
- Pharsalia Plantation 2 results
- Pharsalia Plantation (Va.) 2 results
- Philippines 2 results
- Putnam County 2 results
- Putnam County (N.Y.) 2 results
- Rome 2 results
- Salinas River Valley 2 results
- Scandinavia 2 results more…