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 Fee and Easements features for the northwestern United States. The USGS Protected Areas Database of... Gap Analysis Program (U.S.).
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2015. Murphy, Brendan and Owen, Andrew. 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...
2015. Murphy, Brendan and Owen, Andrew. 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...