Columbia subject headings:
Civil rights movements--Argentina--Matanza.
Matanza (Argentina)--Protest movements.
Harvard subject headings:
Matanza (Argentina)--Economic conditions.
Matanza (Argentina)--Social conditions.
Protest movements--Argentina--Matanza--History--20th century.
Unemployed--Argentina--Matanza--Political activity--History--20th century.
Princeton subject headings:
Unemployed--Argentina--Matanza.