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This page appears when Google automatically detects requests coming from your computer network which appear to be in violation of the
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IP address: 18.215.238.74
Time: 2024-08-03T11:26:14Z
URL: https://scholar.google.com/scholar_lookup?author=Gaxiola%20Gonz%C3%A1lez%20Margarita&author=Guevara%20Jorge&pages=227-242&publication%20year=1989&title=La%20obsidiana%20en%20Mesoam%C3%A9rica