Columbia subject headings:
Church and education--Germany--Oldenburg (Grand Duchy)--History.
Education and state--Germany--Oldenburg (Grand Duchy)--History.
Oldenburg (Grand Duchy)--Church history.
Religious education--Germany--Oldenburg (Grand Duchy)--History.
Harvard subject headings:
Princeton subject headings:
Church and education--Germany--Oldenburg (State)--History.
Elementary schools--Germany--Oldenburg (State)--History--19th century.
Elementary schools--Germany--Oldenburg (State)--History--20th century.
Religious education of children--Germany--Oldenburg (State)--History.
Religious education--Germany--Oldenburg (State)--History--19th century.
Religious education--Germany--Oldenburg (State)--History--20th century.