Region
United States
46
États-Unis
14
Tropics
8
Developing countries
5
USA
5
West (U.S.)
5
European Union countries
4
British Columbia
3
Canada
3
China
3
Japan
3
Northwest, Pacific
3
Régions tropicales
3
Alaska
2
Brazil
2
Costa Rica
2
Etats-Unis d'Amérique
2
Europe
2
Hudson River
2
Hudson River (N.Y. and N.J.)
2
Inde
2
India
2
Mediterranean Region
2
Mexico
2
New England
2
OECD countries
2
Ontario
2
Pacific Area
2
Pendjab
2
Punjab
2
Tongass National Forest
2
Tongass National Forest (Alaska)
2
West United States
2
Allegheny National Forest
1
Allegheny National Forest (Pa.)
1
Alsea River Watershed
1
Amazon River Region
1
Amérique du Nord
1
Amérique latine
1
Appalachian Mountains
1
Arizona
1
Asia
1
Atlantischer Ozean
1
Australia
1
Äthiopien
1
California
1
Camargue
1
Caribbean Area
1
Chine
1
Colombia
1
more ...