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Earliest Stone-Tipped Projectiles from the Ethiopian Rift Date to >279,000 Years Ago
Sahle Y,
Hutchings WK,
Braun DR,
Sealy JC,
Morgan LE,
et al.
(2013)
Earliest Stone-Tipped Projectiles from the Ethiopian Rift Date to >279,000 Years Ago.
PLOS ONE 8(11): e78092.
https://doi.org/10.1371/journal.pone.0078092