Alue
Pennsylvania
Philadelphia
31
United States
31
Pittsburgh
15
Philadelphia (Pa.)
13
Pittsburgh (Pa.)
5
Braddock
4
Braddock (Pa.)
4
Filadelfia
4
Pittsburgh Region (Pa.)
4
Pittsburgh Region
3
Allegheny River (Pa. and N.Y.)
2
Estados Unidos
2
Germany
2
Monongahela River (W. Va. and Pa.)
2
Ohio River
2
Pennsylvanie
2
Scranton
2
Scranton (Pa.)
2
Seattle
2
State College
2
Washington (State)
2
Allegheny (Pa.)
1
Australia
1
Bear Run
1
Clairton (Pa.)
1
Dover
1
Easttown (Pa. : Township)
1
États-Unis
1
Florida
1
Foreign countries
1
Gettysburg
1
Homestead
1
Indiana
1
Israel
1
Kennett Square
1
Kennywood Park (Pa.)
1
Lewistown (Mifflin County)
1
Lewistown (Mifflin County, Pa.)
1
Love Canal Chemical Waste Landfill (Niagara Falls, N.Y.)
1
Luzerne (Comté)
1
Luzerne County
1
New York
1
New York (State)
1
North Carolina
1
North Side (Pittsburgh, Pa.)
1
Philadelphie
1
Punxsutawney
1
Punxsutawney (Pa.)
1
Salisbury
1
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