2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, and 2016. Gap Analysis Program (U.S.). This polygon shapefile contains combined PAD-US Easements features for the United States. The USGS Protected Areas Database of the United States (P... Gap Analysis Program (U.S.).
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2014. Owen, Andrew and Levinson, David M. This data was created as part of a study that examined the accessibility to jobs by transit in 46 of the 50 largest (by population) metropolitan ar...
2014. Murphy, Brendan, Levinson, David M, and Owen, Andrew. This data was created as part of a study that examined the accessibility to jobs by walking in the 53 largest (by population) metropolitan areas in...
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic ice and the Antarctic Ocean at full resolution. GSHHG data are made ... United States. National Geospatial-Intelligence Agency.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic ice and the Antarctic Ocean at high resolution. High represents an 8... United States. National Geospatial-Intelligence Agency.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic ice and the Antarctic Ocean at intermediate resolution. Intermediate... United States. National Geospatial-Intelligence Agency.
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.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic ice and the Antarctic Ocean at crude resolution. Crude represents an... United States. National Geospatial-Intelligence Agency.
2014. United States. Bureau of Transportation Statistics and Jessberger, Steven. This point shapefile contains the locations of travel monitoring station sin the United States. The attributes for these databases have been intent... United States. Bureau of Transportation Statistics.
2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic grounding line and the Antarctic Ocean at full (original) resolution... United States. National Geospatial-Intelligence Agency.