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Kultura : statističeski sbornik
Nacionalen Statističeski Institut <Sofia> - Sofija - 1968(1970) -
Persistent link: https://www.econbiz.de/10000436292
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Problemi na specialnite biblioteki : usăvăršenstvuvane na bibliotečno-bibliografskata dejnost ; tematičen sbornik 1986
Savova, Elena Vălčova (contributor) - 1987
Persistent link: https://www.econbiz.de/10000737929
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Bibliografija na bălgarskata bibliografija / Godišen ukazatel
Narodna biblioteka Sv. Sv. Kiril i Metodij; Narodna … - Sofija : Narodna Biblioteka - 1963(1965) - 1991(1997); damit Ersch. eingest.
Persistent link: https://www.econbiz.de/10000429770
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Bibliotečnata sistema na BAN : problemi, sǎstojanie, perspektivi
Savova, Elena Vălčova - 1976
Persistent link: https://www.econbiz.de/10001354364
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Knigi, biblioteki, bibliografija
Borov, Todor - 1941
Persistent link: https://www.econbiz.de/10014298548
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Novovăvedenie : za i protiv
Šapkarev, Petăr K.; Dimitrova, Paraskeva - 1995
Persistent link: https://www.econbiz.de/10000965506
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Pazarăt na novovăvedenija v Bălgarija
Čobanova, Rosica Dobreva - In: Ikonomičeska misăl 45 (2000) 2, pp. 26-47
Persistent link: https://www.econbiz.de/10001489365
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Prepjatstvijata pred inovacionnata dejnost na predprijatijata
Lazarov, Rumen - In: Ikonomičeska misăl 46 (2001) 2, pp. 45-62
Persistent link: https://www.econbiz.de/10001598216
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Ikonomičesko raznoobrazie i pazarna struktura
Dimitrov, Dinko - In: Ikonomičeska misăl 37 (1992) 5, pp. 77-85
Persistent link: https://www.econbiz.de/10001161310