It is unlikely that many readers would guess that nearly 20,000 bone needles discovered in northwest China would enlighten modern scientists about the technological advancements that marked the ...
HENAN PROVINCE, CHINA—According to a Phys.org report ... the residues contained compounds and minerals typically found in bone. They also detected traces of wild plants, including acorns ...
当前正在显示可能无法访问的结果。
隐藏无法访问的结果