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| РЕ20 |
International Scientific Journal Innovations [CD:друга] / Sci. Techn. Union of Mech.
. - Sofia : Sci. Techn. Union of Mech., 2017-. - 12 см
ISSN 2603-3763УДК 338 | Предметни рубрики: |
| Иновации |
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