Columbia subject headings:
Balkan Peninsula--History--19th century--Congresses.
Bulgaria--History--1762-1878--Congresses.
Odrinski mir--Congresses.
Russo-Turkish War, 1828-1829--Influence--Congresses.
Harvard subject headings:
Balkan Peninsula--History--19th century--Congresses.
Bulgaria--History--1762-1878--Congresses.
Odrinski mir--Congresses.
Russo-Turkish War, 1828-1829--Influence--Congresses.
Princeton subject headings: