Columbia subject headings:
Harvard subject headings:
Aging in literature--Congresses.
Aging--Social aspects--Congresses.
French language--Acquisition--Congresses.
French literature--History and criticism--Congresses
German language--Acquisition--Congresses.
German literature--History and criticism--Congresses
Language acquisition--Congresses.
Language and languages--Foreign elements--Congresses.
Literature--History and criticism--Congresses.
Old age in literature--Congresses.
Old age--Social aspects--Congresses.
Princeton subject headings:
Aging in literature--Congresses.
Aging--Social aspects--Congresses.
French language--Acquisition--Congresses.
French literature--History and criticism--Congresses.
German language--Acquisition--Congresses.
German literature--History and criticism--Congresses.
Language acquisition--Congresses.
Language and languages--Foreign elements--Congresses.
Literature--History and criticism--Congresses.
Old age in literature--Congresses.
Old age--Social aspects--Congresses.