Columbia subject headings:
Mainz (Rhineland-Palatinate, Germany)--Social conditions.
Public welfare--Germany--Mainz (Rhineland-Palatinate)--History.
Harvard subject headings:
Mainz (Rhineland-Palatinate, Germany)--Social conditions.
Public welfare--Germany--Mainz (Rhineland-Palatinate)--History.
Princeton subject headings:
Mainz (Rhineland-Palatinate, Germany)--Social conditions.
Public welfare--Germany--Mainz (Rhineland-Palatinate)--History.