Columbia subject headings:
Excavations (Archaeology)--Mexico--Yucatán.
Mayas--Antiquities.
Yucatán (Mexico : State)--Antiquities.
Harvard subject headings:
Excavations (Archaeology)--Mexico--Yucatán (State)
Fortification--Mexico--Yucatán (State)
Indians of Mexico--Yucatán (State)--Antiquities.
Mayas--Antiquities
Mexico--Antiquities.
Yucatán (Mexico : State)--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--Mexico--Yucatan (State).
Mayas--Antiquities.
Yucatán (Mexico : State)--Antiquities.