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1Letopis na statiite ot bulgarskite spisaniia i sbornitsi /Летопис на статиите от българските списания и сборници /Published 1972“...Narodna biblioteka "Kiril i Metodiĭ"...”
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2by Vŭlchev, V (Velichko), Vŭlchev, V (Velichko), Vŭlchev, V (Velichko), Vŭlchev, V (Velichko)“...Narodna biblioteka "Kiril i Metodiĭ"...”
Published 1985
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4by Furnadzhieva, Elena Georgieva, Furnadzhieva, Elena Georgieva, Furnadzhieva, Elena, Furnadzhieva, Elena“...Narodna biblioteka "Kiril i Metodiĭ."...”
Published 1985
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6Vŭzpomenatelen sbornik po sluchaĭ stogodishninata ot Osvoboditelnata rusko-turska voĭna, 1877-1878 /Published 1978“...Narodna biblioteka "Kiril i Metodiĭ."...”
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8Fihris al-makhṭūṭāt al-ʻArabīyah al-maḥfūẓah fī Dār al-Kutub al-Shaʻbīyah Kīrīl wa-Mītūdī fī Ṣūfīyah ʻāṣimat al-Jumhūrīyah al-Shaʻbīyah al-Bulghārīyah...“...Narodna biblioteka "Kiril i Metodiĭ."...”فهرس المخطوطات العربية المحفوظة في دار الكتب الشعبية كيريل وميتودي في صوفية عاصمة الجمهورية الشعبية البلغارية
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9by Di͡ugmedzhieva, P (Peti͡a), Di︠u︡gmedzhieva, P (Peti︠a︡), Di︠u︡gmedzhieva, P (Peti︠a︡)“...Narodna biblioteka "Kiril i Metodiĭ."...”
Published 1973
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12Natsionalna bibliografii͡a na NR Bŭlgarii͡aНационална библиография на НР БългарияPublished 1973“...Narodna biblioteka "Kiril i Metodiĭ."...”
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13Aprilskoto vŭstanie, otrazeno v bŭlgarskii︠a︡ i chuzhdii︠a︡ periodichen pechat ot 1876 g Bibliogr.“...Narodna biblioteka "Kiril i Metodiĭ."...”
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15by Dancheva, Ĭota, Dancheva, Ĭota, Dancheva, Ĭota, Lazarov, Mikhail, Lazarov, Mikhail“...Narodna biblioteka "Kiril i Metodiĭ"...”
Published 1971
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18Makhṭūṭāt ʻArabīyah fī Maktabat Ṣūfiyā al-Waṭanīyah al-Bulghārīyah (Kīril wa-mītūdī) /مخطوطات عربية في مكتبة صوفيا الوطنية البلغارية (كيرل وميتودي) /Published 1968“...Narodna biblioteka "Kiril i Metodiĭ."...”
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