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Dimova, Lilii︠a︡ - 1980

Persistent link: https://www.econbiz.de/10000346719

Gančev, Todor (contributor) - 1980

Persistent link: https://www.econbiz.de/10003110219

Radev, Simeon - 1979 - 1. izd

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Vŭlkova, Vasilka - 1979 - 1. izd

Persistent link: https://www.econbiz.de/10000629587

Vlajkov, Stojan G. - 1980

Persistent link: https://www.econbiz.de/10002981634

Kirova, Nadežda; Nikolčev, Nikolaj - In: Problemi na truda : teoretiko-priložno spisanie po … 22 (1980) 7, pp. 16-27

Persistent link: https://www.econbiz.de/10002215493

Ivanov, Petǔr - In: Problemi na truda : teoretiko-priložno spisanie po … 22 (1980) 10, pp. 12-22

Persistent link: https://www.econbiz.de/10002186551

Ivanova, Irina - In: Problemi na truda : teoretiko-priložno spisanie po … 22 (1980) 10, pp. 44-50

Persistent link: https://www.econbiz.de/10002187739

1978

Persistent link: https://www.econbiz.de/10003213687

In: Problemi na truda : teoretiko-priložno spisanie po … 22 (1980) 6, pp. 3-88

Persistent link: https://www.econbiz.de/10003262313