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Caption: These are lithic artifacts from flotation. Chogha Golan, Iran. This image relates to a paper that appeared in the July 5, 2013, issue of Science, published by AAAS. The paper, by Simone Riehl at University of Tübingen in Tübingen, Germany, and colleagues was titled, "Emergence of Agriculture in the Foothills of the Zagros Mountains of Iran."
Credit: Image courtesy of TISARP/University of Tübingen
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