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| ноу-хау (A special feature or technique kept secret by an organization and regarded as being the chief factor in its success Vertep) | |||
| уникальная особенность (A.Rezvov) | |||
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| ноу-хау (A special feature or technique kept secret by an organization and regarded as being the chief factor in its success Vertep) | |||
| уникальная особенность (A.Rezvov) | |||