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• Fiction 2
• Ethnography 3
• Proto-Bulgarians, Bulgaria 42
• Volga Bulgars, Tatars 12
• Slavs 16
• Scythia. Sarmatians, Huns 11
• Central and Middle Asia 12
• Thracia, the Balkans 27
• Caucasus 4

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• web book 44
• e-book 2
• news article 12
• gallery 6
• article 64
• journal, compilation 1

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• Bulgarian 21
• English 59
• Russian 37
• French 2
• German 5
• Macedonian 1
• Serbian 2
• Greek 1
• Romanian 1