Columbia subject headings:
Harvard subject headings:
Strangers in literature--Congresses.
Strangers--Congresses.
Strangers--Philosophy--Congresses.
Strangers--Psychological aspects--Congresses.
Princeton subject headings:
Strangers in literature--Congresses.
Strangers--Congresses.
Strangers--Philosophy--Congresses.
Strangers--Psychological aspects--Congresses.