Columbia subject headings:
Petroglyphs--Mexico, North.
Rock paintings--Mexico, North.
Harvard subject headings:
Indians of Mexico--Mexico, North--Antiquities.
Mexico, North--Antiquities.
Petroglyphs--Mexico, North.
Rock paintings--Mexico, North.
Princeton subject headings:
Indians of Mexico--Mexico, North--Antiquities.
Mexico, North--Antiquities.
Petroglyphs--Mexico, North.
Rock paintings--Mexico, North.