Columbia subject headings:
Marx, Karl, 1818-1883.
Tocqueville, Alexis de, 1805-1859.
Harvard subject headings:
Marx, Karl, 1818-1883
Tocqueville, Alexis de, 1805-1859
Princeton subject headings:
Democracy.
Liberty.
Marx, Karl, 1818-1883.
Tocqueville, Alexis de, 1805-1859.