https://www.kpbs.org/news/2007/08/28/the-copper-age-how-metal-changed-the-world
The Copper Age: How Metal Changed the World | KPBS Public Media
Aug 28, 2007 - It is hard to image a world without metal.Journey to the Copper Age: Archaeology in the Holy Land is a new exhibit at the San Diego Museum of Man that tells...
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