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Geografija na promišlenostta v Bŭlgarija : Christov, Todor [Dimitrov] ; Christov, Todor
Christov, Todor D. - 1962
Persistent link: https://www.econbiz.de/10002332783
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Teritorialno-proizvodstveni kompleksi v južna centralna Bǎlgarija : formirane i razvitie
1983
Persistent link: https://www.econbiz.de/10001362111
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Geografsko razpredelenie na promishlenostta v Bŭlgarii︠a︡ i nerat︠s︡ionalnite prevozi
Marinov, Khristo - 1959
Persistent link: https://www.econbiz.de/10001792273