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IP address: 44.202.221.59
Time: 2024-07-12T07:18:22Z
URL: https://scholar.google.com/scholar_lookup?author=Howard%20David%20S.&author=Nelson%20Fred%20W.&publication%20year=1986&title=Trace%20Element%20Analysis%20of%20Obsidian%20Artifacts%20from%20El%20Mirador%2C%20Guatemala