Columbia subject headings:
Philosophy.
Plato--Criticism and interpretation.
Popper, Karl R. (Karl Raimund), 1902-1994.
Harvard subject headings:
Plato
Political science--Philosophy
Popper, Karl R. (Karl Raimund), 1902-1994.
Princeton subject headings:
Justice (Philosophy)
Plato--Political and social views.
Political science.
Popper, Karl Raimund, Sir, 1902---Contributions in political science.
Socrates.
State, The.