Columbia subject headings:
Age distribution (Demography)--Ecuador.
Ecuador--Population--Statistics.
Population forecasting--Ecuador.
Sex distribution (Demography)--Ecuador.
Harvard subject headings:
Age distribution (Demography)--Ecuador.
Ecuador--Population--Statistics.
Population forecasting--Ecuador.
Sex distribution (Demography)--Ecuador.
Princeton subject headings:
Age distribution (Demography)--Ecuador.
Ecuador--Population--Statistics.
Population forecasting--Ecuador.
Sex distribution (Demography)--Ecuador.