Podobne knjige/članki: The middle American calendar round/
- The ancient middle-american calendar system : its origin and development /
- The book the year calendars/
- Origin of the Mesoamerican 260-day calendar/
- Notes on middle american archaeology and ethnology
- Western Mesoamerican Calendars and Writing Systems : proceedings of the Copenhagen Roundtable /
- Calendars in Mesoamerica and Peru : Native American computations of time