Columbia subject headings:
Labor movement--Costa Rica--History--20th century.
Labor--Religious aspects--Christianity--Costa Rica--History--20th century.
Social justice--Costa Rica--History--20th century.
Harvard subject headings:
Labor movement--Costa Rica--History--20th century.
Labor--Costa Rica--Religious aspects--Christianity--History--20th century.
Labor--Religious aspects--Christianity--Costa Rica--History--20th century.
Social justice--Costa Rica--History--20th century.
Princeton subject headings:
Labor movement--Costa Rica--History--20th century.
Labor--Religious aspects--Christianity--Costa Rica--History--20th century.
Social justice--Costa Rica--History--20th century.