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Author
Geological Survey (U.S.)
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Subject
Contours (Cartography)
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Place
United States
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Data type
Line
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Year
2014
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1. 1:1,000,000-Scale Contours of the Conterminous United States
2014. Geological Survey (U.S.). This line shapefile shows elevation contour lines for the conterminous United States. The map layer was derived from the 100-meter resolution eleva... National Atlas of the United States.