Columbia subject headings:
Bulgaria--Relations--Serbia.
Hilandar (Monastery : Athos, Greece)--History.
Serbia--Relations--Bulgaria.
Harvard subject headings:
Bulgaria--Relations--Serbia.
Hilandar (Monastery : Athos, Greece)--History.
Serbia--Relations--Bulgaria.
Princeton subject headings:
Bulgaria--Relations--Serbia.
Hilandar (Monastery : Athos, Greece)
Serbia--Relations--Bulgaria.