Columbia subject headings:
Justice--Congresses.
Political science--Congresses.
Social justice--Congresses.
Harvard subject headings:
Justice--Congresses
Political science--Congresses
Political science--Philosophy--Congresses
Social justice--Congresses
Wittgenstein, Ludwig, 1889-1951--Congresses.
Princeton subject headings:
Justice.
Political science--Philosophy--Congresses.
Wittgenstein, Ludwig, 1889-1951--Congresses.