Region
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Netherlands
1
New Jersey
1
New York
2
New York (State)
2
North America
1
North Carolina
3
Northern Mariana Islands
1
Outer space
1
Petrified Forest National Park
1
Petrified Forest National Park (Ariz.)
1
Poland
1
Portsmouth (N.C.)
2
Rome
1
San Francisco Bay Area
1
Southern States
1
Study and teaching (Primary)
1
Tennessee
7
Texas
1
Trinidad and Tobago
1
USA
1
United States
399
United States Virgin Islands
1
United States, West
1
Washington (D.C.)
1
Washington Metropolitan Area
1
West (U.S.)
7
West United States
1
États-Unis
2