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1. El Salvador household amenity data from 2007 census

2007. Dirección General de Estadística y Censos (DIGESTYC). Shapefile containing 2007 household amenity data for El Salvador, including utility, sanitation, and appliance information, displayed at municipali...

2. Medical Service Study Areas, California, 2007

2007. California. Office of Statewide Health Planning and Development. This polygon shapefile represents medical service study areas (MSSA) in California for 2007. MSSAs are the defined geographic analysis unit for the... California. Office of Statewide Health Planning and Development.

3. Medical Service Study Areas, Census Tract Detail. California, 2007

2007. California. Office of Statewide Health Planning and Development, InfoUSA, and U.S. Census Bureau. The 2007 MSSA Detail layer (developed during July 2009 - July 2010) is an update to the 2005 version. The 2000 Medical Service Study Area (MSSA) Ce... California. Office of Statewide Health Planning and Development.

4. Non-attainment and Maintenance Areas for Air Pollutants: Indiana

2007. Research and Innovative Technology Administration and Bureau of Transportation Statistics. Polygons in this shapefile indicate areas in Indiana designated as non-attainment for ozone and (or) PM-2.5; or maintenance for ozone, carbon monox...