Columbia subject headings:
Oberpfalz (Germany)--Social conditions.
Oberpfalz (Germany)--Social life and customs.
Harvard subject headings:
Oberpfalz (Germany)--Social conditions.
Oberpfalz (Germany)--Social life and customs.
Princeton subject headings:
Oberpfalz (Germany)--Rural conditions.
Oberpfalz (Germany)--Statistics, Medical.
Oberpfalz (Germany)--Statistics, Vital.
Public health--Germany (West)--Oberpfalz--History--19th century.