Researchers confirm earliest archaeological site on Qinghai-Tibet Plateau - Xinhua | English.news.cn - Xinhua

Researchers confirm earliest archaeological site on Qinghai-Tibet Plateau - Xinhua | English.news.cn  Xinhua

LANZHOU, June 17 (Xinhua) -- A karst cave in northwestern China has been confirmed as the earliest archaeological site ever discovered on the Qinghai-Tibet ...

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