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Sistemnoto poznanie
Sivilov, Ljuben Kirilov - 1980
Persistent link: https://www.econbiz.de/10002816456
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Doklady Bolgarskoj Akademii Nauk
Bălgarska akademija na naukite - Sofija - 3.1950(1951) - 43.1990
Persistent link: https://www.econbiz.de/10000356168
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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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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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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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Za charaktera na stokovo-paričnite otnošenija pri socializma
Andonov, Bojan - In: Ikonomičeska misăl 28 (1983) 2, pp. 67-77
Persistent link: https://www.econbiz.de/10001829927
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Rentabilnost i planirane
Mateev, Evgeni - 1970
Persistent link: https://www.econbiz.de/10014390852