Columbia subject headings:
Chichon (Mexico)--Eruptions.
Disaster relief--Mexico.
Zoque Indians--Economic conditions.
Zoque Indians--Social conditions.
Harvard subject headings:
Chichon (Mexico)--Eruption, 1982.
Disaster relief--Mexico.
Zoque Indians--Economic conditions.
Zoque Indians--Social conditions.
Princeton subject headings:
El Chichonal (Mexico)--Eruption, 1982.
Zoque Indians--Social conditions.