Columbia subject headings:
Harvard subject headings:
Automobile industry and trade--Government policy--Canada.
Automobile industry and trade--Government policy--United States
Canada--Foreign economic relations--United States.
United States--Foreign economic relations--Canada.
Princeton subject headings:
Automobile industry and trade--Government policy--Canada.
Automobile industry and trade--Government policy--United States.
Canada--Foreign economic relations--United States.
United States--Foreign economic relations--Canada.