Columbia subject headings:
Competition, Unfair--Congresses.
Consolidation and merger of corporations--Congresses.
Monopolies--Congresses.
Harvard subject headings:
Competition, Unfair--Congresses.
Consolidation and merger of corporations--Congresses.
Monopolies--Congresses.
Princeton subject headings:
Competition, Unfair--Congresses.
Consolidation and merger of corporations--Congresses.
Monopolies--Congresses.