Columbia subject headings:
Business records--Law and legislation--United States--Periodicals.
Computers--Law and legislation--United States.
Contracts--United States--Data processing--Periodicals.
Electronic data interchange--Law and legislation--United States--Periodicals.
Harvard subject headings:
Contracts--United States--Data processing--Periodicals.
Electronic data interchange--Law and legislation--United States--Periodicals.
Princeton subject headings: