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2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic ice and the Antarctic Ocean at low resolution. Low represents an 80 ... United States. National Geospatial-Intelligence Agency.
1978. Stanford Geospatial Center. This index map that can be used to locate individual images from the Stanford-Cambridge Radar Film Digitization Project. This layer is presented in... Stanford Digital Repository.