Columbia subject headings:
Canada--Commerce--Congresses.
Canada--Economic policy--Congresses.
Professions--Canada--Congresses.
Service industries--Canada--Congresses.
Harvard subject headings:
Canada--Commerce--Congresses.
Canada--Economic policy--Congresses.
Service industries--Canada--Congresses.
Princeton subject headings:
Canada--Commerce--Congresses.
Canada--Economic policy--Congresses.
Service industries--Canada--Congresses.