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Subject
Transportation
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22
Roads
11
Rivers
7
Inland Waters
5
Railroads
5
Streets
5
Structure
5
Bridges
4
Hydrography
4
Trails
4
Administrative and political divisions
2
Airports
2
Highways
2
Location
2
National Highway System
2
Runways (Aeronautics)
2
Transportation corridors
2
Channels
1
Coasts
1
Express highways
1