Columbia subject headings:
Automobile industry and trade--Canada--Automation.
Automobile industry and trade--Mexico--Automation.
Automobile industry and trade--United States--Automation.
Internal combustion engine industry--Canada--Automation.
Internal combustion engine industry--Mexico--Automation.
Internal combustion engine industry--United States--Automation.
Harvard subject headings:
Automobile industry and trade--Automation--Canada.
Automobile industry and trade--Automation--Mexico.
Automobile industry and trade--Automation--United States.
Internal combustion engine industry--Automation--Canada.
Internal combustion engine industry--Automation--Mexico.
Internal combustion engine industry--Automation--United States .
Princeton subject headings:
Automobile industry and trade--Canada--Automation.
Automobile industry and trade--Canada.
Automobile industry and trade--Mexico--Automation.
Automobile industry and trade--Mexico.
Automobile industry and trade--United States--Automation.
Automobile industry and trade--United States.