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Ikonomičeski polzi ot opazvaneto na bioraznoobrazieto (na primera na bălgarskite dunavski ostrovi)
Dančev, Aleksi - In: Ikonomičeska misăl 47 (2002) 4, pp. 41-66
Persistent link: https://www.econbiz.de/10001691793
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Biogeografija i priroden kapital na Bălgarija
Asenov, Asen - 2021
Persistent link: https://www.econbiz.de/10012608068
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Ekologija i ikonomika
Božinov, Todor B. (contributor) - 1990 - Izd. 1
Persistent link: https://www.econbiz.de/10000876612
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Ekologija i upravlenie
Božinov, Todor B. - 1989 - 1. izd
Persistent link: https://www.econbiz.de/10000792693
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La política ambiental catalana davant l'autonomia
Vergés, Josep C. - In: Cuadernos de economía : publ. del Consejo Superior de … 12 (1984) 33, pp. 147-158
Persistent link: https://www.econbiz.de/10001105372
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Ekologičnite prioriteti i tjachnata rolja v regionalnata ikonomika
Čkorev, Nikolaj - In: Ikonomičeska misăl 40 (1995) 7, pp. 13-24
Persistent link: https://www.econbiz.de/10001203746
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Ustojčivo razvitie i mnogoobrazie v Bălgarija
Bakărdžieva, Radostina (contributor) - 2010
Persistent link: https://www.econbiz.de/10008647490
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Regionalni problemi na Republika Bălgarija
Terzijska, Diana; Lozanov, Emil - 2006
Persistent link: https://www.econbiz.de/10003431363
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Catalunya a la Comunitat Europea : efectes de l'adhesió i perspectives per al 1992
Llimona i Balcells, Joaquim (contributor);  … - 1988 - 1. ed
Persistent link: https://www.econbiz.de/10000871593
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L' Acta Única Europea
Gasòliba, Carles A. - 1989 - 1. ed
Persistent link: https://www.econbiz.de/10000873303