Columbia subject headings:
Bulgaria--Biography.
Bulgaria--History--Alexander, 1879-1886--Biography.
Eastern Rumelia--Biography.
Eastern Rumelia--History--Union with Bulgaria, 1885--Biography.
Harvard subject headings:
Bulgaria--Biography.
Bulgaria--History--Alexander, 1879-1886--Biography.
Eastern Rumelia--Biography.
Eastern Rumelia--History--Union with Bulgaria, 1885--Biography.
Princeton subject headings: