Columbia subject headings:
Families--Germany--Trier--History.
Social classes--Germany--Trier--History.
Trier (Germany)--History.
Trier (Germany)--Social conditions.
Harvard subject headings:
Families--Germany--Trier--Statistics.
Social classes--Germany--Trier--History--18th century.
Social classes--Germany--Trier--History--19th century.
Trier (Germany)--Population--History.
Trier (Germany)--Statistics, Vital.
Princeton subject headings:
Families--Germany (West)--Trier--History.
Social classes--Germany (West)--Trier--History.
Trier (Germany)--History.
Trier (Germany)--Social conditions.