RT @DegenRolf: The world’s first known written word is 12,000 years old – any you may guess what it means. https://file.scirp.org/pdf/AD_2019013116150412.pdf https://…
Source date (UTC): 2019-11-18 16:14:18 UTC
Original post: https://twitter.com/i/web/status/1196461639199051781
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