Region
Abkhazia (Georgia)
1
Accra
1
Afghanistan
1
Africa
4
Africa, North
2
Africa, Sub-Saharan
2
Alabama
1
Alaska
4
Albuquerque
1
Algeria
2
America
2
American Samoa
1
Andes Region
1
Angola
1
Appalachian Region
1
Arctic National Wildlife Refuge
1
Argentina
1
Arizona
2
Armenia
1
Asia
3
Aswan High Dam (Egypt)
1
Athens
1
Atlanta
3
Atlanta (Ga.)
1
Atlantic Coast (U.S.)
1
Aurora
1
Australia
4
Balochistan Region
1
Baltimore
4
Baltimore Region
1
Benton Harbor (Mich.)
1
Berkshire County
1
Berkshire County (Mass.)
1
Bodie
1
Bolivia
1
Boone County
1
Boston
2
Boston (Mass.)
1
Brazil
3
British Columbia
1
Brookfield (Town)
1
Brooklyn (New York, N.Y.)
2
Buffalo
1
Butte
1
Butte (Mont.)
1
California
28
California, Southern
1
Camden (Ohio)
1
Canada
17
Caribbean Area
1
more ...