Region
United States
266
Colorado
15
Antarctica
10
China
9
Maryland
7
Bethesda
5
Arctic regions
4
Atlantic Coast (U.S.)
4
Great Britain
4
Alaska
3
California
3
Southern States
3
Arab countries
2
Japan
2
Los Alamos
2
Middle East
2
New Mexico
2
Northwest, Old
2
Outer space
2
Pacific Coast (U.S.)
2
Polar regions
2
Amundsen Scott South Pole Station (Antarctica)
1
Arizona
1
Australia
1
Berkeley
1
Blake Plateau
1
Caribbean Sea
1
Cook Inlet
1
Delaware
1
Developed countries
1
Dry Tortugas National Park
1
Europe
1
Europe, Eastern
1
European Economic Community countries
1
European Union countries
1
Florida
1
Great Smoky Mountains National Park (N.C. and Tenn.)
1
Greece
1
Greeley
1
Greenbelt
1
Gulf Coast (U.S.)
1
H.J. Andrews Experimental Forest (Or.)
1
Hong Kong
1
Hubbard Brook Experimental Forest (N.H.)
1
Illinois
1
Iraq
1
Latin America
1
Lisbon
1
Livermore
1
Louisiana
1
more ...