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| primary study (Andy) | |||
| original study | |||
| primary research | |||
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| upstream research (Many of these inventions were based on what we might call upstream research, not the implementation of research that was largely done elsewhere. A.Rezvov) | |||
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первичное исследование : 8 a las frases, 5 temas |
| Astronáutica | 1 |
| Ensayo clínico | 2 |
| Farmacia y farmacología | 2 |
| Marketing | 2 |
| Medicina | 1 |