Columbia subject headings:
Harvard subject headings:
Bebel, August, 1840-1913
Bebel, August, 1840-1913--Correspondence.
Germany--Foreign relations--Great Britain.
Great Britain--Foreign relations--Germany.
World War, 1914-1918--Germany.
Princeton subject headings:
Bebel, August, 1840-1913--Correspondence.
Bebel, August, 1840-1913.
Germany--Foreign relations--Great Britain.
Great Britain--Foreign relations--Germany.
World War, 1914-1918--Germany.