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| experimental | |||
| exploratory | |||
| observational; pilot | |||
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| experimental; pilot | |||
| empirical; tentative | |||
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| tentatively | |||
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eksperimentalni : 25 do fraz, 9 tematyki |
| Budownictwo | 1 |
| Chemia | 1 |
| Fotografia | 2 |
| Hydrologia | 1 |
| Lotnictwo | 2 |
| Prawo | 10 |
| Ropa / ropa naftowa | 2 |
| Ruch drogowy | 1 |
| Technika i technologia | 5 |