Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Relations--Russia--Sources.
Russia--Foreign relations--1801-1825--Sources.
Russia--Foreign relations--1801-1917--Sources.
Russia--Foreign relations--1825-1855--Sources.
Russia--Foreign relations--Serbia--Sources.
Russia--Relations--Balkan Peninsula--Sources.
Serbia--Foreign relations--Russia--Sources.
Princeton subject headings:
Russia--Foreign relations--1801-1825--Sources.
Russia--Foreign relations--1825-1855--Sources.
Russia--Foreign relations--Serbia--Sources.
Serbia--Foreign relations--Russia--Sources.