This definition appears somewhat frequently
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Samples in periodicals archive:
Jewish Community Federation of San Francisco, the peninsula, Marin and Sonoma counties
Jewish Family and Children's Services (JFCS) of San Francisco, Peninsula, Marin & Sonoma Counties in California. Making a positive impact in people's lives.
Contra dances and English Country dances in the San Francisco North Bay (Marin and Sonoma counties).
Where in Marin and Sonoma Counties in California to find pick your own farms and orchards for fruit, vegetables, pumpkins and canning & freezing instructions!
Kelly (Buckwalter) Casanova for west coast swing dancing, private and group lessons in Marin and Sonoma Counties and the San Francisco Bay Area.