African Hunter-Gatherer Teeth - 搜索图片

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edition.cnn.com
Africa's ancient hunter gatherers struggle for survival - CNN.com
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CNN > Antonia Mortensen,Daisy Carrington
Hunter-gatherer tribe maintains traditions
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scimex.org
Making the move from hunter-gatherers to farmers change…
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Gizmodo
What Present-Day Hunter-Gatherers Can Tell Us About the Bacteria in Our Gut

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