Columbia subject headings:
Harvard subject headings:
Orinoco River (Venezuela and Colombia)--Discovery and exploration--Exhibitions.
Travelers--Orinoco River Region (Venezuela and Colombia)--Exhibitions.
Venezuela--Discovery and exploration--Exhibitions.
Princeton subject headings:
Orinoco River Region (Venezuela and Colombia)--History--Exhibitions.
Travelers--Orinoco River Region (Venezuela and Colombia)--History--Exhibitions.