Columbia subject headings:
Paraná (Brasil : Estado)--Condiciones económicas.
Paraná (Brasil : Estado)--Condiciones sociales.
Paraná (Brazil : State)--Economic conditions.
Paraná (Brazil : State)--Social conditions.
Harvard subject headings:
Paraná (Brazil : State)--Economic conditions.
Paraná (Brazil : State)--Social conditions.
Princeton subject headings:
Paraná (Brazil : State)--Economic conditions.
Paraná (Brazil : State)--Social conditions.