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1. Important Farmland, Sonoma County, California, 1990

1990. California. Farmland Mapping and Monitoring Program. This polygon shapefile represents areas of important farmland in Sonoma County, California for 1990. Established in 1982, Government Code Section 6... California. Farmland Mapping and Monitoring Program.

2. Vineyards: Russian River Basin, California, 1990-1997

1990. Circuit Rider Productions. This polygon shapefile describes the 1990/1997 vineyard and appellation boundaries of Sonoma County. The data was developed from Sonoma County Plan... Circuit Rider Productions.