ArticlePloS one2013
Earliest stone-tipped projectiles from the Ethiopian rift date to >279,000 years ago.
Yonatan Sahle et al.PubMed ↗Full text ↗Publisher ↗
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ArticlePloS one2013
Yonatan Sahle et al.PubMed ↗Full text ↗Publisher ↗
No numbers read from the abstract.