Columbia subject headings:
Ehrler, Hans Heinrich, 1872-1951--Criticism and interpretation.
World War, 1939-1945--Propaganda.
Harvard subject headings:
Ehrler, Hans Heinrich, 1872-1951--Criticism and interpretation.
World War, 1939-1945--Propaganda.
Princeton subject headings:
Ehrler, Hans Heinrich, 1872-1951--Criticism and interpretation.
World War, 1939-1945--Propaganda.