Columbia subject headings:
Automobile mechanics--Labor unions--Argentina--Córdoba (Province)--History.
Railroads--Employees--Labor unions--Argentina--Córdoba (Province)--History.
Sindicato de Trabajadores Concord (Córdoba, Argentina)--History.
Sindicato de Trabajadores de Materfer (Córdoba, Argentina)--History.
Harvard subject headings:
Automobile mechanics--Labor unions--Argentina--Córdoba (Province)--History.
Railroads--Employees--Labor unions--Argentina--Córdoba (Province)--History.
Sindicato de Trabajadores Concord (Córdoba, Argentina)--History.
Sindicato de Trabajadores de Materfer (Córdoba, Argentina)--History.
Princeton subject headings:
Automobile industry workers--Labor unions--Argentina.
Labor disputes--Argentina.
Sindicato de Trabajadores Concord (Córdoba, Argentina)
Sindicato de Trabajadores de Materfer (Córdoba, Argentina)
Social conflict--Argentina.