Columbia subject headings:
Harvard subject headings:
Dill, Hans-Otto.
Language and languages--Philosophy--Congresses
Religion and science--Congresses
Religion--Philosophy--Congresses
Romance philology--Congresses.
Princeton subject headings:
Dill, Hans-Otto.
Language and languages--Philosophy--Congresses.
Religion and science--Congresses.
Religion--Philosophy--Congresses.
Romance philology--Congresses.