Columbia subject headings:
Harvard subject headings:
Detention of persons--Mexico--Tijuana (Baja California)
Labor disputes--Mexico--Tijuana (Baja California)
Machinists--Labor unions--Canada.
Machinists--Labor unions--United States.
Offshore assembly industry--Mexico--Tijuana (Baja California)
Princeton subject headings:
Detention of persons--Mexico--Tijuana (Baja California, Mexico).
Labor disputes--Mexico--Tijuana (Baja California, Mexico).
Labor unions--Machinists--Canada.
Labor unions--Machinists--United States.
Offshore assembly industry--Mexico--Tijuana (Baja California, Mexico).