An edition of Poslanieto na TSarigradskiia patriarkh Fotii do Bulgarskiia kniaz Boris ; (1994)

Poslanieto na T͡S︡arigradskii͡a︡ patriarkh Fotiĭ do Bŭlgarskii͡a︡ kni͡a︡z Boris

Okrŭzhnoto poslanie na patriarkh Fotiĭ do iztochnite patriarsi ot 867 god. Otgovorite na papa Nikolaĭ I po dopitvanii͡a︡ta na bŭlgarite

By Photius I Saint, Patriarch of Constantinople