Columbia subject headings:
Yucatán (Mexico : State)--Antiquities.
Harvard subject headings:
Archaeological surveying--Yucatán Peninsula.
Indians of Central America--Belize--Antiquities.
Indians of Central America--Guatemala--Antiquities
Indians of Mexico--Mexico--Yucatán (State)--Antiquities.
Yucatán Peninsula--Antiquities.
Princeton subject headings:
Yucatán Peninsula--Description and travel.