Columbia subject headings:
Harvard subject headings:
Archaeology--Mexico--Hidalgo (State)
Excavations (Archaeology)--Mexico--Hidalgo (State)
Hidalgo (Mexico : State)--Antiquities.
Princeton subject headings:
Archaeology--Mexico--Hidalgo (State).
Excavations (Archaeology)--Mexico--Hidalgo (State).
Hidalgo (Mexico : State)--Antiquities.