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Continue to ChatEvidence for 1500-year-old salt boiling found in China http://archaeofeed.com/2016/12/evidence-for-1500-year-old-salt-boiling-found-in-china/
Evidence for 1500-year-old salt boiling found in China http://archaeofeed.com/2016/12/evidence-for-1500-year-old-salt-boiling-found-in-china/