Columbia subject headings:
Germany--Politics and government--20th century.
Hitler, Adolf, 1889-1945--Assassination attempts.
Jews--Persecutions.
Poland--Politics and government--1989-
Protestantism.
Prussia (Germany)--History--Philosophy.
Harvard subject headings:
Germany--Politics and government--20th century
Hitler, Adolf, 1889-1945--Assassination attempt, 1944 (July 20)
Jews--Persecutions.
Poland--Politics and government--1945-
Protestantism
Prussia (Germany)--History--Philosophy.
Princeton subject headings:
Germany--Politics and government--20th century.
Hitler, Adolf, 1889-1945--Assassination attempts.
Jews--Persecutions.
Poland--Politics and government--1945-.
Protestantism.
Prussia (Germany)--History--Philosophy.