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1982. 2016-01-07T20:36:23Z. 2016-07-13T21:10:33Z. Ratcliffe, Nicholas M. (Nicholas Morley), 1938-. U.S. Geological Survey. English. cartographic image. Public. New York (State), Rockland County, Rockland County (N.Y.), and Rockland County.
1984. 2023-09-01T15:45:21Z. 2023-09-02T03:02:58Z. Espinosa, A. F., author. U.S. Geological Survey. English. cartographic image. Public. Arctic regions and Arctic Regions.