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Materialna osnova na razvedrjavaneto
Belčev, Ivan - 1979
Persistent link: https://www.econbiz.de/10001886949
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Balkanski kulturni vzaimootnošenija
Dragova, Nadežda (ed.) - 1980
Persistent link: https://www.econbiz.de/10000006710
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Balkanski kulturni i literaturni vrăzki
Rusev, Penʹo N. (ed.) - 1974
Persistent link: https://www.econbiz.de/10000009542
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Ljuben Karavelov : biografija
Dimitrov, Michail - 1959
Persistent link: https://www.econbiz.de/10014449105
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Ikonomičeski otnošenija meždu NR Bŭlgarija i SSSR : Popisakov, Grigor (Angelov)
Popisakov, Grigor Angelov - 1968
Persistent link: https://www.econbiz.de/10002323412
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Bŭlgaro-sŭvetski otnoshenii︠a︡, 1948-1970 : dok. i materialy
Petrov, Li︠u︡ben P. (contributor);  … - 1974
Persistent link: https://www.econbiz.de/10002850972
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Oktomvrijskata Revoljucija i bălgaro-săvetskata družba : izsledvanija po slučaj 50 god. ot revoljucijata
Christov, Christo Angelov (contributor) - 1967
Persistent link: https://www.econbiz.de/10002327507
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Bǔlgaro-sǔvetski Otnošenija : 1971 - 1976; Dokumenti i materiali
Ivanov, M. (revision); Radionov, N. N. (contributor) - 1977
Persistent link: https://www.econbiz.de/10014418977
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Techniko-ikonomičeski vŭprosi cenoobrazuvaneto pri vŭglistata
Radev, Radi; Balev, Viktor - 1963
Persistent link: https://www.econbiz.de/10000524296