Columbia subject headings:
Andes Region--Description and travel.
Andes Region--Social conditions.
Colombia--Description and travel.
Colombia--Social conditions.
Human geography--Andes Region--History--20th century.
Human geography--Colombia--History--20th century.
Land capability for agriculture--Andes Region.
Land capability for agriculture--Colombia.
Harvard subject headings:
Andes Region--Description and travel.
Colombia--Description and travel.
Princeton subject headings: