Columbia subject headings:
La Ligua Region (Valparaíso, Chile)--Economic conditions.
La Ligua Region (Valparaíso, Chile)--Social conditions.
Rural population--Chile--La Ligua Region (Valparaíso)--History.
Harvard subject headings:
Demography--Chile--La Ligua.
La Ligua (Chile)--Population--History.
La Ligua (Chile)--Social conditions.
Rural population--Chile.
Princeton subject headings:
La Ligua Region (Valparaíso, Chile)--Population--Statistics.
La Ligua Region (Valparaíso, Chile)--Social conditions.