Columbia subject headings:
Canada. Treaties, etc. 1993 September 14.
Free trade--North America.
Labor policy--North America.
North American Free Trade Agreement
Harvard subject headings:
Collective labor agreements--North America.
Labor movement--Political aspects--North America.
North American Free Trade Agreement
Princeton subject headings:
Collective labor agreements--North America.
Labor movement--Political aspects--North America.
North American Free Trade Agreement