Columbia subject headings:
Disaster relief--South America.
Natural disasters--South America.
South America--Economic conditions.
South America--Social conditions.
Harvard subject headings:
Disaster relief--South America.
Natural disasters--South America.
South America--Economic conditions.
South America--Social conditions.
Princeton subject headings:
Disaster relief--South America.
Natural disasters--South America.
South America--Economic conditions.
South America--Social conditions.