Region
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Vietnam
7
Amazon River Valley
6
Bangladesh
6
Caribbean Area
6
Ecuador
6
Hawaii
6
Hungary
6
Iraq
6
Kansas
6
Korea (South)
6
Maryland
6
Minnesota
6
New Zealand
6
North Dakota
6
Sudan
6
Africa, North
5
Arizona
5
Borneo
5
Cameroon
5
Colorado
5
East Asia
5
Flanders
5
Guatemala
5
Honduras
5
Indiana
5
Israel
5
Korea
5
Louisiana
5
Québec (Province)
5
Tennessee River Valley
5
Venezuela
5
Yunnan Sheng (China)
5
Africa, East
4
Alabama
4
Alaska
4
Asia, Central
4
Belize
4
Bengal
4
Brabant
4
Bulgaria
4
Chiapas
4
Congo (Democratic Republic)
4
Cuba
4
Czech Republic
4
Former Soviet republics
4
Italy, Southern
4
Kent
4
Mediterranean Region
4
Michigan
4
Mississippi River Valley
4
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