Columbia subject headings:
Central America--Antiquities--Bibliography.
Indians of Central America--Antiquities--Bibliography.
Indians of Mexico--Antiquities--Bibliography.
Mexico--Antiquities--Bibliography.
Petroglyphs--Central America--Bibliography.
Petroglyphs--Mexico--Bibliography.
Rock paintings--Central America--Bibliography.
Rock paintings--Mexico--Bibliography.
Harvard subject headings:
Central America--Antiquities--Bibliography.
Indians of Central America--Antiquities--Bibliography.
Indians of Mexico--Antiquities--Bibliography.
Mexico--Antiquities--Bibliography.
Petroglyphs--Central America--Bibliography.
Petroglyphs--Mexico--Bibliography.
Rock paintings--Central America--Bibliography.
Rock paintings--Mexico--Bibliography.
Princeton subject headings: