Kăsnorimskijat kastel "Kovačevsko Kale" i bălgarskite zemi prez IV-VI vek = late Roman fortress “Kovachevsko Kale” and the Bulgarian lands (4th–6th c. AD)

Parallelsachtitel: Late Roman Fortress “Kovachevsko Kale” and the Bulgarian Lands (4th–6th c. AD)
Weitere Verfasser: Aleksandrov, Oleg , [redaktor]
Ort/Verlag/Jahr: Tărnovo : Faber, 2017.
Varna : Ongăl, 2023.
Umfang/Format: 3 volumes (300, xx, 335 pages) : illustrations ; 24 cm.