Columbia subject headings:
Authors and publishers--United States--Congresses.
Competition, Unfair--United States--Congresses.
Copyright--United States--Congresses.
Libel and slander--United States--Congresses.
Harvard subject headings:
Authors and publishers--United States.
Competition, Unfair--United States
Copyright--United States.
Libel and slander--United States.
Princeton subject headings:
Authors and publishers--United States.
Competition, Unfair--United States.
Copyright--United States.
Libel and slander--United States.