Columbia subject headings:
Empiricism--Congresses.
Ethics--Congresses.
Rationalism--Congresses.
Science--Philosophy--Congresses.
Harvard subject headings:
Empiricism--Congresses.
Ethics--Congresses
Rationalism--Congresses.
Science--Philosophy--Congresses
Princeton subject headings:
Empiricism--Congresses.
Ethics--Congresses.
Rationalism--Congresses.
Science--Philosophy--Congresses.