2011. United States. Environmental Protection Agency. Region IX. This polygon shapefile shows designated areas for particulate matter < 10 microns according to the 24-Hour National Ambient Air Quality Standard... California. Air Resources Board.
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2011. United States. Environmental Protection Agency. This polygon shapefile identifies areas in the U.S. where air pollution levels have not met the 2006 National Ambient Air Quality Standards (NAAQS)... California. Air Resources Board.
Keulen, Johannes van, 1654-1715. Robijn's 1683 map entitled "Wassende graadt kaert vande Groote, Zuyd, Zee..." is nearly identical. California as an island on second Sanson model, ...
Loon, J. van, ca. 1611-1686. California as an island on second Sanson model. Agubela de Cato, Straet Anian, and Terra Incognita [or] Onbekent Landt to north. Nearly identical w...
Loon, J. van, ca. 1611-1686. Map is oriented with north to the left. L.C. 470,476 & 3433; Koeman,IV,Loon1(26); Koeman,IV, Loon5(38). California as an island on second Sanson mo...
Goos, Pieter, ca. 1616-1675. California as an island on second Sanson model. Nearly identical with Van Loon's map of same title but location of some place names differ. P. de M...
2014. United States. Bureau of Transportation Statistics and Hunt, Raquel. The Rail Network is a comprehensive database of United States railway system at 1:24,000 to 1:100,000 scale. This polyline shapefile depicts Amtrak... United States. Bureau of Transportation Statistics.
2013. California. Department of Transportation. This point shapefile contains the ocations of passenger rail stations in California as of 2013. All station information was compiled from Amtrak Op... California. Department of Transportation.
2013. Firestine, Theresa. Over 55 percent of the approximately 7,100 passenger transportation terminals in the United States offer travelers the ability to connect among the... United States. Bureau of Transportation Statistics.
2000. This raster dataset represents the average yield for peach and nectarine crops in tons per hectare. Croplands cover ~15 million km2 of the planet a... University of Minnesota. Institute on the Environment.