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Okolna sreda - bednost
Conev, Stefan - In: Statistika / Nacionalen Statističeski Institut 54 (2002) 4, pp. 104-112
Persistent link: https://www.econbiz.de/10001765124
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Promišlenost i okolna sreda
Dimitrova, Cvetana P. (contributor) - 1993 - 1. dop. izd
Persistent link: https://www.econbiz.de/10000946970
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Elektroenergetikata v Bălgarija
Nabatov, Nikita (contributor) - 2015
Persistent link: https://www.econbiz.de/10011400333
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Văzobnovjaemi energijni iztočnici
Kiskinov, Nikolaj; Кискинов, Николай - 2012
Persistent link: https://www.econbiz.de/10010238059
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Razvitie na văzobnovjaemite energjni iztočnici v Bălgarija
Grigorova, Veselina - In: Ikonomičeska misăl 55 (2010) 4, pp. 50-65
Persistent link: https://www.econbiz.de/10008699325
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Naučnata politika ba Bălgarija v oblastta na VEI prez vtorata polovina na XX i načaloto na XXI vek
Damjanov, Plamen - 2020
Persistent link: https://www.econbiz.de/10012434567
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Energijnata bednost v Băalgarija : izmenija i faktori
Peneva, Teodora - 2022
Persistent link: https://www.econbiz.de/10014462473
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Tourism
Bulgarien / Centralno Statističesko Upravlenie; … - Sofija - 1.1950 - 2008(2009)
Persistent link: https://www.econbiz.de/10000433891
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Technologičnite inovaci i turizmăt na Bălgarija
Rakadžijska, Svetla (contributor) - 2004
Persistent link: https://www.econbiz.de/10003311353
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Regionalni problemi na Republika Bălgarija
Terzijska, Diana; Lozanov, Emil - 2006
Persistent link: https://www.econbiz.de/10003431363