| http://www.w3.org/ns/prov#value | - Dental offices in California are required to post signs warning that ???Dental Amalgam, used in many dental fillings, causes exposure to mercury, a chemical known to the state of California to cause birth defects or other reproductive harm.??? Most recently, Consumers for Dental Choice won resolutions recognizing the health threat of dental mercury from the California cities of Costa Mesa and Sant
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