Columbia subject headings:
Harvard subject headings:
Valparaíso (Chile : Region)--Economic conditions--Statistics.
Valparaíso (Chile : Region)--Population--Statistics.
Valparaíso (Chile : Region)--Social conditions--Statistics.
Princeton subject headings:
Valparaíso (Chile : Region)--Economic conditions--Statistics.
Valparaíso (Chile : Region)--Population--Statistics.
Valparaíso (Chile : Region)--Social conditions--Statistics.