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Occupational Ergonomics: Engineering and Administrative Controls - Google Books Result

9 Nov 2018 ... Some recent specimens, for instance, have been dated back to around ... The atlatl was one of the first forms of weaponry made by anatomically modern humans. ... The weapon consisted of a handle with a notch at the end that would .... a walking stick, fur coat, and scales of a fish in his pockets, this man is ...