Columbia subject headings:
Harvard subject headings:
Church and education--Germany--Prussia--History--19th century.
Church and education--Germany--Prussia--History--20th century.
Church schools--Germany--Prussia--History--19th century.
Church schools--Germany--Prussia--History--20th century.
Evangelische Kirche der Altpreussischen Union--Education.
Prussia (Germany)--Church history--19th century.
Prussia (Germany)--Church history--20th century.
Princeton subject headings:
Church and education--Germany--Prussia--History--19th century.
Church and education--Germany--Prussia--History--20th century.
Church schools--Germany--Prussia--History--19th century.
Church schools--Germany--Prussia--History--20th century.
Evangelische Kirche der Altpreussischen Union--Education.
Prussia (Duchy)--Church history--19th century.
Prussia (Duchy)--Church history--20th century.