Columbia subject headings:
Harvard subject headings:
Social service--Argentina--History.
Princeton subject headings:
Professional associations--Argentina--Buenos Aires (Province)--History--20th century.
Professional associations--Argentina--Buenos Aires--History--20th century.
Social service--Argentina--Buenos Aires (Province)--Societies, etc.--History--20th century.
Social service--Argentina--Buenos Aires--Societies, etc.--History--20th century.