Region
Africa
3
Alaska
1
Bavaria
1
Big Black River
1
Big Black River Basin
1
Brooklyn (New York, N.Y.)
1
Butler County
3
California
2
Canada
1
Cauca River Valley
1
Cauca River Valley (Colombia)
1
Chile
1
Colombia
1
Connecticut
1
Developing countries
1
Economic aspects
1
England
4
Europe
1
Geauga County
2
Georgia
1
Germany
2
Gettysburg Region
1
Great Britain
6
Haight-Ashbury (San Francisco, Calif.)
1
Illinois
1
India
1
Iowa
7
Ireland
1
Italy
1
Kenya
1
KwaZulu-Natal
1
Lee County
1
Mexico, Gulf of
1
Middle Atlantic States
2
Middle West
2
Minnesota
1
Moldova
1
Montgomery County
1
Montgomery County (Pa.)
1
Nashville
1
New Hampshire
1
New Jersey
2
New York
1
New York (State)
2
New York Region
1
North America
1
North Carolina
3
North Dakota
1
Northeastern States
2
Ohio
3
more ...