Columbia subject headings:
Aging--Europe--History--Congresses.
Older people--Europe--History--Congresses.
Social history--Medieval, 500-1500--Congresses.
Harvard subject headings:
Aging--Social aspects--Europe--History--Congresses.
Older people--Europe--History--Congresses.
Social history--Medieval, 500-1500--Congresses
Princeton subject headings:
Aging--Europe--History--Congresses.
Older people--Europe--History--Congresses.
Social history--Medieval, 500-1500--Congresses.