Columbia subject headings:
Colombia--Description and travel.
Harvard subject headings:
Colombia--Description and travel.
Llanos (Colombia and Venezuela)--Description and travel.
Orinoco River Valley (Venezuela and Colombia)--Description and travel.
Princeton subject headings:
Colombia--Description and travel.
Guaviare River Region--Description and travel.
Indians of South America--Colombia--Social conditions.
Orinoco River Region--Description and travel.
Vichada River Region--Description and travel.