Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Foreign public opinion, German.
Balkan Peninsula--History--19th century.
Balkan Peninsula--History--20th century.
Diplomatic and consular service, German--Serbia--History--19th century--Sources.
Diplomatic and consular service, German--Serbia--History--20th century--Sources.
Germany--Foreign relations--Serbia.
Middle East--Foreign public opinion, German.
Serbia--Foreign public opinion, German.
Serbia--Foreign relations--Germany.
Serbia--History--19th century.
Serbia--History--20th century.
Serbia--In literature.
Princeton subject headings:
Germany--Foreign relations--1871-1918.
Germany--Relations--Serbia.
Serbia--Relations--Germany.