Bulgarian History Museum by Brian McMorrow
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Tsarevets - The fortification for Bulgarian kings of the second Bulgarian kingdom by Nikola Gruev
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#2 - Sofia and the western Balkan range by Alan Grant
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Sofia guide - page 252 to 311 by Nikola Gruev
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Baba Vida Castle by Nikola Gruev
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Sofia guide - page 1 to 51 by Nikola Gruev
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Maria Louisa - The public place for swimming and sun bathing by Nikola Gruev
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Tsar Samuil's Fortress by Nikola Gruev
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Sofia's new airport by Nikola Gruev
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130 ãîäèíè îò àïðèëñêîòî âúñòàíèå by Nikola Gruev
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Russalka beach - free access by Nikola Gruev
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Tchiprovtsi (Chiprovtsi) by Nikola Gruev
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