Columbia subject headings:
Rhineland-Palatinate (Germany)--Politics and government--20th century.
Rhineland-Palatinate (Germany)--Social policy.
Harvard subject headings:
Rhineland-Palatinate (Germany)--Politics and government--20th century.
Rhineland-Palatinate (Germany)--Social policy.
Princeton subject headings:
Rhineland-Palatinate (Germany)--Politics and government--20th century.
Rhineland-Palatinate (Germany)--Social policy.