Columbia subject headings:
Andes--Economic conditions.
Indians of South America--Andes--Economic conditions.
Peasants--Andes.
Harvard subject headings:
Andes Region--Economic conditions.
Indians of South America--Andes Region--Economic conditions
Peasants--Andes Region.
Princeton subject headings:
Andes Region--Economic conditions.
Indians of South America--Andes Region--Economic conditions.
Peasants--Andes region.