Region
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Bosnia and Herzegovina
1
Boston
2
Botswana
2
Brazil
26
Brevig Mission
1
Brevig Mission (Alaska)
1
Bristol
1
British Columbia
5
Brownsville
2
Buenaventura
1
Bulgaria
2
Burma
1
Calfornia
2
Calgary
2
Cali
1
California
62
Cambodia
2
Cambridge
4
Cambridge (Mass.)
1
Cameroon
2
Canada
98
Canada, Northern
4
Canary Islands
1
Canberra (A.C.T.)
1
Caribbean Area
6
Caribbean Sea
1
Cary
1
Cascadia Subduction Zone
1
Cauca River Valley
1
Caucasus, Northern
1
Chaco Canyon (N.M.)
1
Chenega Bay
1
Chesapeake Bay (Md. and Va.)
3
Chesapeake Bay Region (Md. and Va.)
1
Chesapeake Bay Watershed
1
Chesapeake Bay Watershed (Md. and Va.)
1
Chicago
5
Chicago (Ill.)
1
Chile
3
China
73
China, Southwest
1
Cincinnati
3
Clayton
1
Cleveland Metropolitan Area
1
Cleveland Metropolitan Area (Ohio)
1
Colombia
32
Colorado
11
Colorado Plateau
3
Colorado River Watershed (Colo.-Mexico)
1
Columbia River Watershed
1
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