Bogdan Filov
![Bogdan Filov](https://upload.wikimedia.org/wikipedia/commons/a/a0/%D0%91%D0%BE%D0%B3%D0%B4%D0%B0%D0%BD_%D0%A4%D0%B8%D0%BB%D0%BE%D0%B2.jpg)
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Published: 1913
Superior document: Materiali za istorijata na Sofija 4
2
Published: 1925
Superior document: La Bulgarie d'aujourd'hui 9
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4
Published: 1906
Superior document: Klio : Beiheft 6
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