Columbia subject headings:
Ethics--Congresses.
Knowledge, Theory of--Congresses.
Political science--Philosophy--Congresses.
Science--Philosophy--Congresses.
Truth--Congresses.
Harvard subject headings:
Ethics--Congresses
Knowledge, Theory of--Congresses
Political science--Philosophy--Congresses
Science--Philosophy--Congresses
Truth--Congresses
Princeton subject headings:
Ethics--Congresses.
Knowledge, Theory of--Congresses.
Political science--Philosophy--Congresses.
Science--Philosophy--Congresses.
Truth--Congresses.