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mehrstufiges
| Stichprobenverfahren
| mehrstufig | |
| agric. | multietajat |
| Stichprobenverfahren | |
| econ. | eșantionare |
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| multietajat | |||
| cu mai multe trepte; cu multe niveluri | |||
| mehrstufiges: 16 phrases in 6 subjects |
| Agriculture | 1 |
| Business | 3 |
| Construction | 5 |
| Forestry | 1 |
| Mathematics | 4 |
| Microsoft | 2 |