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Continue to Chat“Obsidian Sources in the Regions of Erzurum (NE Turkey): New Data In Surveys - https://avesis.atauni.edu.tr/yayin/df89c12a-4cf1-4ca0-a745-f8287c3910cf/obsidian-sources-in-the-regions-of-erzurum-ne-turkey-new-data-in-surveys