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| систематический отбор образцов (пород) | |||
| систематическая выборка; неслучайная выборка | |||
| механическая выборка; системная выборка | |||
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échantillon systématique : 3 phrases in 2 subjects |
| Mathematics | 2 |
| Natural resourses and wildlife conservation | 1 |
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