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| Vorstudie f; Leitstudie f; Testuntersuchung f | |||
| Pilotstudie f | |||
| Pilotuntersuchung f | |||
| Pilot-Studie f | |||
| Teststudie f; Versuchsstudie f | |||
| Modellstudie f; Musteruntersuchung f; Probestudie f | |||
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| Pilotstudie f | |||
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pilot study : 6 a las frases, 3 temas |
| Economía | 2 |
| General | 3 |
| Medicina | 1 |