Columbia subject headings:
Monopolies--Germany.
Monopolies--United States.
Trusts, Industrial--Germany.
Trusts, Industrial--United States.
Harvard subject headings:
Consolidation and merger of corporations--Law and legislation--Germany--History.
Consolidation and merger of corporations--Law and legislation--United States--History.
Holding companies--Germany--History.
Holding companies--United States--History.
Subsidiary corporations--Germany--History.
Subsidiary corporations--United States--History.
Princeton subject headings: