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2014. National Atlas of the United States. This line shapefile includes Global Map data showing ferries on major roads in the United States and Puerto Rico. Ferries are ships that carry vehi... National Atlas of the United States.
1943. Powell, Susan and Navarro, Fernando. This line dataset represents the navigable water routes in and near Mongolia in 1943. The features were described on the source map as "Navigable w... UC Berkeley Library.