Columbia subject headings:
Heredia (Costa Rica : Canton)--Economic conditions.
Heredia (Costa Rica : Canton)--Social conditions.
Public opinion--Costa Rica--Heredia (Canton)
Working class--Costa Rica--Heredia (Canton)
Harvard subject headings:
Heredia (Costa Rica : Canton)--Economic conditions.
Heredia (Costa Rica : Canton)--Social conditions.
Public opinion--Costa Rica--Heredia (Canton)
Working class--Costa Rica--Heredia (Canton)
Princeton subject headings:
Heredia (Costa Rica)