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" Journal of Geophysical Research 78
apply NOVUS 3 with firm back- and-forth strokes at a right angle to visible scratches
3 billion years old
the Golden Gate Bridge opened to the public
Early Neolithic Stone 3.81" Scraper greece " Journal of Geophysical ResearchThe oldest knowledge of humankind we have doesnt come from stories or recorded histories, but the stones our ancient ancestors left behind. Commonly known as handaxes, the true span of their use went far beyond that. Choppers, blades, scrapers, points, and crushing tools have all been discovered and many tools may have been reshaped over time to be used for new purposes. This specimen is a 3. 81" scraper from North Africa and is dated to roughly
