Columbia subject headings:
Harvard subject headings:
Iron and steel workers--Mexico--Lázaro Cárdenas (Michoacán de Ocampo)
Siderúrgica Lázaro Cárdenas-Las Truchas.
Strikes and lockouts--Iron industry--Mexico--Lázaro Cárdenas (Michoacán de Ocampo)
Truchas (Firm) Strike, 1979.
Princeton subject headings:
Iron and steel workers--Mexico--Lázaro Cárdenas (Michoacán de Ocampo).
Siderúrgica Lázaro Cárdenas-Las Truchas.
Sindicato Minero (Mexico). Sección 271
Truchas (Firm) Strike, 1979.