Columbia subject headings:
Central places--Ecuador.
Ecuador--Economic conditions.
Land settlement--Ecuador.
Space in economics.
Urbanization--Ecuador.
Harvard subject headings:
Central places--Ecuador.
Ecuador--Economic conditions--Regional disparities.
Land settlement--Ecuador.
Space in economics.
Urbanization--Ecuador.
Princeton subject headings:
Central places--Ecuador.
Ecuador--Economic conditions--Regional disparities.
Land settlement--Ecuador.
Space in economics.
Urbanization--Ecuador.