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Čechoslovakija i Bălgarija prez vekovete
Gandev, Christo (contributor) - 1963
Persistent link: https://www.econbiz.de/10000679037
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Za vsestranno razvitie na bŭlgaro-jugoslavskite otnošeniija : deklaratcija na M-voto na vŭnšite raboti na NRB
Komitov, R. (contributor) - Bulgaria / Ministerstvo na vŭnšnite raboti - 1978
Persistent link: https://www.econbiz.de/10000414681
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NRB--GDR, druzhba i sŭtrudnichestvo
Aleksandrov, Emil (contributor); Petkov, Petko (contributor) - Bŭlgarska akademii︠a︡ na naukite, Sofia / Institut … - 1979
Persistent link: https://www.econbiz.de/10000329348
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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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Bŭlgaro-rumŭnski nauc̆ni i kulturni vrŭzki : 1869-1944; dokumenti
Ganev, Todor N. - 1973
Persistent link: https://www.econbiz.de/10001634528
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50 godini Oktomvrijska Socialističeska Revoljucija : dokladi ot Jubilejnata Sesija na Sofijskija Univ. 'Kliment Ochridski'
Atanasov, Žečo G. - 1969
Persistent link: https://www.econbiz.de/10002327502
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Bulgarisch-deutsche Kulturbeziehungen, 1806-1966
Kunčev, Stefan (contributor); Radev, Trajan (contributor);  … - 1968
Persistent link: https://www.econbiz.de/10000021994