Columbia subject headings:
Harvard subject headings:
Academic libraries--Canada--Automation.
Department stores--Canada--Automation.
Grocery trade--Canada--Automation.
Hospitals--Canada--Automation.
Information storage and retrieval systems--Economic aspects--Canada.
Service industries--Canada--Automation.
Variety stores--Canada--Automation.
Princeton subject headings:
Electronic data processing--Canada.
Service industries--Canada--Automation.