Oblast
Afghanistan
2
Africa
16
Africa, North
8
Africa, Southern
1
Africa, Sub-Saharan
6
Africa, West
1
Albania
1
Amazon River Region
1
America
1
Andes Region
1
Andhra Pradesh
1
Arab countries
1
Argentina
4
Armenia (Republic)
2
Asia
8
Asia, Central
7
Australia
1
Austria
2
Balkan Peninsula
2
Bangladesh
2
Belarus
1
Belgium
1
Bolivia
2
Bosnia and Hercegovina
1
Brazil
11
Bulgaria
2
California
1
Canada
5
Caribbean Area
7
Catalonia
1
Catalonia (Spain)
1
Central America
1
Chesapeake Bay Watershed
1
Chile
2
China
47
China, Northwest
1
Colombia
2
Communist countries
1
Croatia
1
Cuba
1
Czech Republic
3
Czechoslovakia
2
Developed countries
1
Developing countries
171
EU-landen
1
East Asia
16
Ecuador
3
Egypt
1
England
4
Eurasia
1
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