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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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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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Săstojanie i tendencii na klimata v Bălgarija i emisiite na parnikovi gazove ot selʹskoto stopanstvo
Nenova, Radka - 2017
Persistent link: https://www.econbiz.de/10011869401
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Ikonomičeski i socialni problemi na naučno-techničeskija progres : naučni trudove 82
Jordanov, Ivan (contributor) - 1983
Persistent link: https://www.econbiz.de/10000897237
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Čovekăt v naučno-techničeskata revoljucija
Georgiev, Ivan - 1988 - 1. izd
Persistent link: https://www.econbiz.de/10000746525
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Krăstopăt na progresa : problemi, na dialektikata na socialno-ikonomičeskija i naučno-techničeskija progres
Ivanov, Krăstʹo - 1987 - 1. izd
Persistent link: https://www.econbiz.de/10000746678
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Čoveškijat faktor v naučno-techničeskata revoljucija
Markov, Marko (contributor) - 1987 - 1. izd
Persistent link: https://www.econbiz.de/10000752225
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Naučno-techničeskata politika na BKP na săvremennija etap
Dočev, Ivan (contributor) - 1987
Persistent link: https://www.econbiz.de/10000736211
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Planirovanie naučno-techničeskogo progressa i ispolʹzovanie proizvodstvennogo potenciala v selʹskom chozjajstve
Todorova, Diana S.; Charalanova, Christina - 1987
Persistent link: https://www.econbiz.de/10000804745