Fig.1 Hammerstone (1), cores (2, 3) and flakes (4-6) from the Guochachang II site of the Danjiangkou Reservoir area. Credit: XU Yong)
Fig.1 Hammerstone (1), cores (2, 3) and flakes (4-6) from the Guochachang II site of the Danjiangkou Reservoir area. Credit: XU Yong)
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