Folklore and Ethnic Costumes of Bulgaria by Richard Wallace
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Sofia in the year of 1912 by Nikola Gruev
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Vitosha on the 1st of November 2009 by Nikola Gruev
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Veliko Tarnovo by andreev22
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The park around NDK (National Palace of Culture) by Nikola Gruev
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Vitosha on the 3d of August 2016 by Nikola Gruev
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Vitosha on the 10th of Feb. 2001 by Nikola Gruev
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Bulgaria 2007- learning the Cyrillic alphabet by Doron Avi-Ad
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National road #1 or international #E79 [Sofia - Vratsa - Montana - Vidin (to the north)] by Nikola Gruev
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The city of Zlatograd by Nikola Gruev
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Hadji Nikoli Inn (Õàí Õàäæè Íèêîëè) by Nikola Gruev
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Rila mountain by Vladimir Atanasov
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