Columbia subject headings:
Laughter in literature--Congresses.
Laughter--Philosophy--Congresses.
Wit and humor--Philosophy--Congresses.
Harvard subject headings:
East and West--Congresses
Laughter--Philosophy--Congresses.
Wit and humor--Philosophy--Congresses.
Princeton subject headings:
Laughter in literature--Congresses.
Laughter--Philosophy--Congresses.
Wit and humor--Philosophy--Congresses.