The Bắc Sơn culture is the name given to a period of the Neolithic Age in Vietnam. The Bắc Sơn culture, also called the Bacsonian period, is often regarded as a variation of the Hoabinhian industry characterized by a higher frequency of edge-grounded cobble artifacts compared to earlier Hoabinhian artifacts.
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Bắc Sơn culture Wikipedia(Text) CC BY-SA