Columbia subject headings:
Harvard subject headings:
Canada--Commercial policy.
Foreign trade and employment--Canada.
Foreign trade and employment.
Free trade--Canada
Free trade.
Protectionism--Canada.
Trade adjustment assistance--Canada.
Trade adjustment assistance.
Princeton subject headings:
Canada--Commercial policy.
Foreign trade and employment--Canada.
Foreign trade and employment.
Free trade--Canada.
Protectionism--Canada.
Trade adjustment assistance--Canada.
Trade adjustment assistance.