Columbia subject headings:
Culture diffusion--El Salvador.
Culture diffusion--Honduras.
El Salvador--Antiquities.
Excavations (Archaeology)--El Salvador.
Excavations (Archaeology)--Honduras.
Honduras--Antiquities.
Indians of Central America--El Salvador--Antiquities.
Indians of Central America--Honduras--Antiquities.
Harvard subject headings:
El Salvador--Antiquities.
Honduras--Antiquities.
Indians of Central America--El Salvador--Antiquities.
Indians of Central America--Honduras--Antiquities.
Princeton subject headings:
Culture diffusion--El Salvador.
Culture diffusion--Honduras.
El Salvador--Antiquities.
Excavations (Archaeology)--El Salvador.
Excavations (Archaeology)--Honduras.
Honduras--Antiquities.
Indians of Central America--El Salvador--Antiquities.
Indians of Central America--Honduras--Antiquities.