'The 2 most populous Penn. counties are Philadelphia & this one that shares its name with a Pittsburgh river'
the Allegheny
U.S. COUNTIES: The 2 most populous Penn. counties are Philadelphia & this one that shares its name with a Pittsburgh river
The 2 most populous Penn. counties are Philadelphia & this one that shares its name with a Pittsburgh river
The 2 most populous Penn. counties are Philadelphia & this one that shares its name with a Pittsburgh river
U.S. COUNTIES
the Allegheny
U.S. COUNTIES