Columbia subject headings:
Germany--History--Night of the Long Knives, 1934.
Germany--Politics and government--1933-1945.
Harvard subject headings:
Germany--History--Night of the Long Knives, 1934.
Germany--Politics and government--1933-1945.
Princeton subject headings:
Germany--History--Night of the Long Knives, 1934.
Germany--Politics and government--1933-1945.
Röhm, Ernst, 1887-1934.