Columbia subject headings:
Canada--Foreign economic relations--United States.
Canada--Relations--United States.
United States--Foreign economic relations--Canada.
United States--Relations--Canada.
Harvard subject headings:
Canada--Foreign economic relations--United States.
Canada--Relations--United States.
Nationalism--Canada
United States--Foreign economic relations--Canada.
United States--Relations--Canada.
Princeton subject headings:
Canada--Foreign economic relations--United States.
Canada--Relations--United States.
United States--Foreign economic relations--Canada.
United States--Relations--Canada.