Columbia subject headings:
Codex Borbonicus.
Manuscripts, Nahuatl.
Nahuatl language--Writing.
Harvard subject headings:
Aztec calendar.
Codex Borbonicus
Nahuatl language--Writing.
Picture-writing--Mexico.
Princeton subject headings:
Codex Borbonicus.
Nahuatl language--Writing.
Picture-writing--Mexico.