Columbia subject headings:
Democracy.
Kant, Immanuel, 1724-1804.
Liberalism.
Political science.
Popper, Karl R. (Karl Raimund), 1902-1994.
Harvard subject headings:
Democracy
Kant, Immanuel, 1724-1804--Contributions in political science.
Liberalism
Popper, Karl R. (Karl Raimund), 1902-1994--Contributions in political science.
Princeton subject headings:
Democracy--Philosophy.
Kant, Immanuel, 1724-1804--Contributions in political science.
Popper, Karl Raimund, Sir, 1902---Contributions in political science.