Subject Region
United States
195
Latin America
73
China
36
Spain
30
Europe
23
Great Britain
20
Espana
19
Developing countries
14
India
14
Brazil
13
Canada
13
Mexico
13
Indonesia
12
America Latina
11
Australia
11
Colombia
11
Africa
9
Argentina
9
Israel
9
Japan
9
Rome
9
Germany
8
Greece
8
England
7
America
5
Egypt
5
France
5
Scandinavia
5
Iran
4
Korea (South)
4
New England
4
North America
4
Québec (Province)
4
Turkey
4
Arab countries
3
Asia
3
Belgium
3
Ecuador
3
Europe, Eastern
3
Europe, Northern
3
Italy
3
Switzerland
3
Western Mediterranean
3
Africa, Sub-Saharan
2
Andes Region
2
Baltic Sea
2
Belarus
2
California
2
Cameroon
2
Catalonia
2
more ...