Columbia subject headings:
Harvard subject headings:
Central America--Population--Economic aspects.
Central America--Population--Social aspects.
Central America--Population.
Costa Rica--Population--Economic aspects.
Costa Rica--Population--Social aspects.
Demography--Central America.
Health status indicators--Central America.
Health surveys--Central America.
Mexico--Population--Economic aspects.
Mexico--Population--Social aspects.
Public health--Central America--Statistics.
Princeton subject headings:
Central America--Population.
Public health--Central America.