Columbia subject headings:
Contracts--Great Britain--History.
Contracts--History.
Law and socialism--History.
Liberty of contract--Great Britain--History.
Liberty of contract--History.
Marx, Karl, 1818-1883.
Harvard subject headings:
Contracts--History.
Law and socialism--History.
Liberty of contract--History.
Marx, Karl, 1818-1883
Princeton subject headings:
Contracts--History.
Law and socialism--History.
Liberty of contract--History.
Marx, Karl, 1818-1883.