1999. Geological Survey (U.S.). This line shapefile portrays the major roads in the United States, Puerto Rico, and the U.S. Virgin Islands. The file was produced by joining the i... Geological Survey (U.S.).
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1999. Ohio. Division of Geological Survey. Scale 1:500,000 ; Lambert conformal conic projection, standard parallels 33⁰ and 45⁰ Includes text and 2 key maps showing compilation responsibilit... Ohio. Division of Geological Survey.