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• Fiction 2
• Ethnography 3
• Proto-Bulgarians, Bulgaria 38
• Volga Bulgars, Tatars 12
• Slavs 14
• Scythia. Sarmatians, Huns 10
• Central and Middle Asia 12
• Thracia, the Balkans 25
• Caucasus 3

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• web book 41
• e-book 2
• news article 12
• gallery 6
• article 57
• journal, compilation 1

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• Bulgarian 21
• English 55
• Russian 32
• French 2
• German 5
• Macedonian 1
• Serbian 2
• Greek 1