Title: Heirmologion periechon tous heirmous tōn kanonōn kat' ēchon, tas ennea ōdas, ta phōtagōgika, ta exaposteilaria kai tous ainous, meta parartēmatos : pros to eurythmoteron anachtheisa met' akrivous epidiorthōseōs : tē engraphēo adeia
Subjects: Liturgy, Texts, Orthodox Eastern Church