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Klimat i mikroklimat na Sofija
Blŭskova, Donka (contributor) - 1983
Persistent link: https://www.econbiz.de/10000344509
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Privatizacija i ekologično ustojčivo ikonomičesko ravnovesie
Vaklinova, Margarita - In: Ikonomičeska misăl 39 (1994) 1, pp. 43-52
Persistent link: https://www.econbiz.de/10001165005
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Vǔzdejstvie na ekologičeskata kriza vǔrchu kapitalističeskata ikonomika
Cekin, Georgi - In: Ikonomičeska misăl 30 (1985) 2, pp. 88-96
Persistent link: https://www.econbiz.de/10001988073
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Ekologija i obštestvo
Kŭrov, Asen - 1980 - 1. izd
Persistent link: https://www.econbiz.de/10002313170
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Sbornik materiali ot Dvustrannata Bălgaro-Rumănska Konferencija "Naučni Problemi na Reka Dunav" : 4 - 7 noemvri 1983, Varna ; 7 - 10 noemvri 1983, Tulča
Zachariev, Ivan (contributor) - Bilateral Bulgarian Romanian Conference Scientific … - 1985
Persistent link: https://www.econbiz.de/10014385403
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Bălgaro-nemski kulturni otnošenija 1806-1966 : bibliografija
Kunčev, Stefan (contributor); Radev, Trajan (contributor);  … - 1968
Persistent link: https://www.econbiz.de/10000021994
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FRG i novite technologii
Cekin, Georgi - 1986
Persistent link: https://www.econbiz.de/10000698903
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Dokumenti za bălgarskata istorija iz germanski archivi : 1829 - 1877
Christov, Christo Angelov (contributor);  … - Institut za istorija <Sofia> - 1963
Persistent link: https://www.econbiz.de/10000158408
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Dăržavnomonopolističesko regulirane na vănšnoikonomičeskite otnošenija na Federalna Republika Germanija
Sotirov, Stefan - In: Dăržavnomonopolističesko regulirane văv …, (pp. 139-173). 1984
Persistent link: https://www.econbiz.de/10001307810