Columbia subject headings:
Harvard subject headings:
Children--Family relationships--Germany--Congresses.
Conflict of generations--Germany--History--Congresses.
Families--Germany--Congresses.
Intergenerational relations--Germany--Congresses.
Intergenerational relations--Germany--History--Congresses.
Social change--Germany--Congresses.
Social change--Germany--History--Congresses.
Princeton subject headings:
Children--Family relationships--Germany--Congresses.
Conflict of generations--Germany--History--Congresses.
Intergenerational relations--Germany--History--Congresses.
Social change--Germany--History--Congresses.