Columbia subject headings:
Harvard subject headings:
Christian education--Germany--History--20th century.
Christian education--Philosophy--History--20th century.
National socialism and education.
National socialism and religion.
Petersen, Peter, 1884-1952.
Princeton subject headings:
Christian education--Germany--History--20th century.
Christian education--Philosophy--History--20th century.
National socialism and education.
National socialism and religion.
Petersen, Peter, 1884-1952.