Columbia subject headings:
Business--Data processing--Periodicals.
Electronic data processing--Periodicals.
Electronic office machines--Periodicals.
Harvard subject headings:
Business--Data processing--Periodicals
Electronic data processing--Periodicals
Electronic office machines--Periodicals.
Princeton subject headings:
Business--Data processing--Periodicals.
Electronic data processing--Periodicals.
Electronic office machines--Periodicals.
Periodicals.