Columbia subject headings:
Bulgaria--History--1393-1878.
Suvorovo (Bulgaria)--History.
Turks--Bulgaria--History.
Harvard subject headings:
Bulgaria--History--1393-1878.
Suvorovo (Bulgaria)--History.
Turks--Bulgaria--History
Princeton subject headings:
Bulgaria--History--1393-1878.
Suvorovo (Bulgaria)--History.
Turks--Bulgaria--History.