Columbia subject headings:
National socialism and education--Germany--Oldenburg (Landkreis)
Nationalsozialistischer Lehrerbund.
Oldenburgischer Landeslehrerverein.
Teachers' unions--Germany--Oldenburg (Landkreis)--History--20th century.
Teachers--Political activity--Germany--Oldenburg (Landkreis)--History--20th century.
Harvard subject headings:
National socialism and education.
Nationalsozialistischer Lehrerbund.
Oldenburgischer Landeslehrerverein.
Teachers' unions--Germany--Oldenburg (Landkreis)--History--20th century.
Teachers--Germany--Oldenburg (Landkreis)--Political activity--History--20th century.
Teachers--Political activity--Germany--Oldenburg (Landkreis)--History--20th century.
Princeton subject headings:
National socialism and education--Germany (West)--Oldenburg (Landkreis).
Nationalsozialistischer Lehrerbund.
Oldenburgischer Landeslehrerverein.
Teachers' unions--Germany (West)--Oldenburg (Landkreis)--History--20th century.
Teachers--Germany (West)--Oldenburg (Landkreis)--Political activity--History--20th century.