2012. California. Farmland Mapping and Monitoring Program. This polygon shapefile represents areas of important farmland in Sierra Valley County, California for 2012. Established in 1982, Government Code Se... California. Farmland Mapping and Monitoring Program.
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2014. California. Farmland Mapping and Monitoring Program. This polygon shapefile represents areas of important farmland in Sierra Valley, California for 2014. Established in 1982, Government Code Section 6... California. Farmland Mapping and Monitoring Program.