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Ikonomičeski alternativi
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NAPS, Nacionalen Agrarno-Promišlen Sǔjuz. Centǔr za Naučno-Techničeska i Ikonomičeska Informacija, Informacionen bjuletin
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Patentite za izobretenija kato indikator za tehnologičnoto razvitie na oblast himija i metalurgija v Bălgarija prez perioda 2001 - 2010 g.
Georgieva, Rumjana
- In:
Ikonomičeski alternativi
(
2011
)
4
,
pp. 40-71
Persistent link: https://www.econbiz.de/10009488495
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Čelen proizvodstven opit i vnedreni novosti
Pavlova, N.
(
contributor
)
-
1981
Persistent link: https://www.econbiz.de/10003103263
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