Columbia subject headings:
Central America--Antiquities--Congresses.
Excavations (Archaeology)--Central America--Congresses.
Excavations (Archaeology)--Mexico--Congresses.
Indian philosophy--Central America--Congresses.
Indian philosophy--Mexico--Congresses.
Indians of Central America--Antiquities--Congresses.
Indians of Mexico--Antiquities--Congresses.
Mexico--Antiquities--Congresses.
Harvard subject headings:
Central America--Antiquities--Congresses.
Excavations (Archaeology)--Central America--Congresses.
Excavations (Archaeology)--Mexico--Congresses.
Indian philosophy--Central America--Congresses.
Indian philosophy--Mexico--Congresses.
Indians of Central America--Antiquities--Congresses
Indians of Mexico--Antiquities--Congresses
Mexico--Antiquities--Congresses.
Princeton subject headings:
Central America--Antiquities--Congresses.
Excavations (Archaeology)--Central America--Congresses.
Excavations (Archaeology)--Mexico--Congresses.
Indians of Central America--Antiquities--Congresses.
Indians of Central America--Philosophy--Congresses.
Indians of Mexico--Antiquities--Congresses.
Indians of Mexico--Philosophy--Congresses.
Mexico--Antiquities--Congresses.