University of Texas Libraries GeoData
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Wetlands
62
Recreation areas
61
Population
58
Hydrology
55
Bridges
51
Railroads
51
Glaciers
48
Rapids
48
Waterfalls
48
Runways (Aeronautics)
46
Towers
43
Districts
42
Vegetation boundaries
40
Buildings
39
Cliffs
39
Fault zones
39
Landforms
39
Mines and mineral resources
39
Streets
39
Salt mines and mining
38