Хрониката на Зигеберт и сведенията му за българите в периода 680 – 820 г. / Chronica of Sigebert and his Records about the Bulgarians for the Period 680 – 820 A.D.
| Autor: | Mihaylov, Stoyan, Lungarova, Pepa |
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| Zdroj: | Епохи / Epochs. XXV(2):448-471 |
| Databáze: | Central and Eastern European Online Library (CEEOL) |
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