Columbia subject headings:
Antitrust law--Economic aspects--United States.
Competition--United States.
Monopolies--United States.
Trusts, Industrial--United States.
Harvard subject headings:
Antitrust law--Economic aspects--United States
Competition--United States
Monopolies--United States.
Trusts, Industrial--United States.
Princeton subject headings:
Antitrust law--Economic aspects--United States.
Competition--United States.
Monopolies--United States.
Trusts, Industrial--United States.