Columbia subject headings:
Harvard subject headings:
Education and state--Germany--History--19th century.
Education and state--Germany--History--20th century.
Education, Elementary--Germany--History--19th century.
Education, Elementary--Germany--History--20th century.
Princeton subject headings:
Education and state--Germany--History--19th century.
Education and state--Germany--History--20th century.
Education, Elementary--Germany--History--19th century.
Education, Elementary--Germany--History--20th century.