Columbia subject headings:
Automobile industry and trade--Canada.
Automobile industry and trade.
Canada--Commercial treaties.
Commercial treaties.
Duty-free importation of automobiles--Canada.
Duty-free importation of automobiles--United States.
Harvard subject headings:
Automobile industry and trade--Law and legislation--Canada.
Automobile industry and trade--Law and legislation--United States
Duty-free importation of automobiles--Canada.
Duty-free importation of automobiles--United States.
Legislative hearings.
Tariff--Law and legislation--United States.
Princeton subject headings:
Duty-free importation of automobiles--Canada.
Duty-free importation of automobiles--United States.