Subject Region
United States
233
Great Britain
28
Canada
10
Asia
9
Europe
7
Germany
7
Australia
6
China
5
England
4
European Union countries
3
France
3
Netherlands
3
Africa
2
Belgium
2
Brazil
2
Crete
2
Crete (Greece)
2
Europe, Eastern
2
Finland
2
Greece
2
India
2
Iraq
2
Japan
2
Middle Atlantic States
2
Pacific Area
2
Southern States
2
Amsterdam
1
Amsterdam (Netherlands)
1
Arab countries
1
Art
1
Baltic Sea Region
1
Cauca River Watershed
1
Chesterholme
1
Chesterholme (England)
1
Colombia
1
Cuenca del Rio Cauca
1
Denmark
1
Developing countries
1
Earth
1
Earth (Planet)
1
East Asia
1
Ecuador
1
El Salvador
1
English-speaking countries
1
Italy
1
Jiddah
1
Lannon
1
Latin America
1
Lehigh River (Pa.)
1
Leicester
1
more ...