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.
1994. U.S. Census Bureau. This shapefile is a gross-level polygon of the Monterey County political boundary intended for general mapping and planning purposes. The exact sou... Monterey County (Calif.) Planning Department.