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Č. 1 : Narodno obrazovanie, nauka, kulturen život, pečat, naučnoateistična propaganda
Dekalo, Văla S. - 1984
Persistent link: https://www.econbiz.de/10001386499
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Pazarăt na trudai socialnata zaštita v ikonomičeskoto razvitie na Bălgarija : (1990 - 2011)
Canov, Vasil; Šopov, Georgi; Beleva, Iskra Spasova; … - 2012
Persistent link: https://www.econbiz.de/10009702010
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Integracionnite procesi v Tropičeska Afrika
Panev, Pirin - 1975
Persistent link: https://www.econbiz.de/10000320113
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Problemi na naukata i obrazovanieto : (izbrani dokladi, statii i izkazvanija)
Balevski, Angel - 1974
Persistent link: https://www.econbiz.de/10000639388
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Sistemata nauka-proizvodstvo v ikonomicheskoto razvitie na NRB : [monogr.]
Pandeva, Margarita - 1979
Persistent link: https://www.econbiz.de/10000424519
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Istorija na obrazovanieto i pedagogičeskata misăl v Bălgarija
Čakărov, Najden G.; Atanasov, Žečo G. - 1962 - 2. prerab. izd
Persistent link: https://www.econbiz.de/10002330983
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"Malkijat svjat" na goljamata nauka
Stefanov, Nikola Kostadinov - 1981
Persistent link: https://www.econbiz.de/10002879269
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Funkcijata "meždunarodno sŭtrudnic̆estvo i intergracija" v stopanskite sistemi i iziskvanija kŭm nejnata technologija
Elazarov, Simeon - 1980
Persistent link: https://www.econbiz.de/10002118729