Columbia subject headings:
Harvard subject headings:
Prussia (Germany)--Statistics, Vital--History--19th century.
Prussia (Germany)--Statistics, Vital--History--20th century.
Science and state--Germany--Prussia--History--19th century.
Science and state--Germany--Prussia--History--20th century.
Princeton subject headings:
Prussia (Germany)--Statistics, Vital--History--19th century.
Prussia (Germany)--Statistics, Vital--History--20th century.
Science and state--Germany--Prussia--History--19th century.
Science and state--Germany--Prussia--History--20th century.