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Razvitie na logističnija sektor v Bălgarija
Dimitrov, Pavel Krumov; Veličkova, Ekaterina Atanasova; … - 2008
Persistent link: https://www.econbiz.de/10003842358
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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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Čoveškijat faktor v naučno-techničeskata revoljucija
Markov, Marko (contributor) - 1987 - 1. izd
Persistent link: https://www.econbiz.de/10000752225
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Rabotno vreme, uslovija na trud, demografsko povedenie
Michova, Genoveva (contributor);  … - 2007
Persistent link: https://www.econbiz.de/10003527358