DescriptionAnnotated Image of the Aubin Tonalamatl and Codex Borbonicus.pdf
English: The left side of this image shows the Codex Borbonicus, an Aztec codex that contains significant information about the calendar or time keeping systems of the Aztecs. The right side shows the Aubin Tonalamatl, another codex that reveals much about the calendar system of the Nahuatl people.
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