Region
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Boston Region (Mass.)
1
Boundary Waters Canoe Area
2
Boundary Waters Canoe Area (Minn.)
2
Brazil
8
British Columbia
6
British West Indies
1
Buguias
2
Buguias (Philippines)
2
Burma
1
California
7
Cambridge
1
Camp Lejeune
1
Camp Lejeune (N.C.)
1
Canada
9
Canada, Northern
1
Cape Cod
1
Cape Cod (Mass.)
1
Caribbean Area
11
Central America
3
Chamberlain Farm
1
Chamberlain Farm (Me.)
1
Charles River Watershed
1
Charles River Watershed (Mass.)
1
Chesapeake Bay Region (Md. and Va.)
3
Chicago
1
Chicago (Ill.)
1
Chiltern Hills (England)
1
China
12
Chisago County
1
Chisago County (Minn.)
1
Chisos Basin
1
Chisos Basin (Tex.)
1
Chukchi Sea
1
Civilization, Medieval
1
Colombia
3
Colonial National Historical Park
1
Colonial National Historical Park (Va.)
1
Colorado
2
Columbia River
1
Columbia River Region
1
Congaree National Park
1
Congaree National Park (S.C.)
1
Connecticut River Valley
2
Cootamundra Region (N.S.W.)
1
Cradle of Humankind World Heritage Site (South Africa)
2
Cyprus
1
Darling River Watershed (Qld. and N.S.W.)
1
Denali National Park and Preserve
1
Denali National Park and Preserve (Alaska)
1
Denmark
1
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