马家塬M21出土一件料珠的成分和风化层的研究

王若苏¹, 孙凤^1,^2,^*, 先怡衡¹

Study on the Composition and Weathered Layer of a Silicate Bead Excavated From Ma-Jia-Yuan Cemetery M21

WANG Ruo-su¹, SUN Feng^1,^2,^*, XIAN Yi-heng¹

马家塬料珠样品