Columbia subject headings:
Harvard subject headings:
Child psychology--Germany--History--20th century--Congresses.
Children and war--Germany--Congresses.
World War, 1914-1918--Children--Germany--Congresses.
World War, 1914-1918--Germany--Psychological aspects--Congresses.
World War, 1939-1945--Children--Germany--Congresses.
World War, 1939-1945--Germany--Psychological aspects--Congresses.
Youth and war--Germany--Congresses.
Princeton subject headings:
Child psychology--Germany--History--20th century--Congresses.
Children and war--Germany--Congresses.
World War, 1914-1918--Children--Germany--Congresses.
World War, 1914-1918--Germany--Psychological aspects--Congresses.
World War, 1939-1945--Children--Germany--Congresses.
World War, 1939-1945--Germany--Psychological aspects--Congresses.
Youth and war--Germany--Congresses.