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| systeemdruk m; voedingsdruk | |||
| system pressure: 25 phrases in 12 subjects |
| Agriculture | 2 |
| Chemistry | 1 |
| Earth sciences | 2 |
| Environment | 1 |
| General | 2 |
| Industry | 2 |
| Information technology | 4 |
| Life sciences | 2 |
| Mechanic engineering | 3 |
| Mineral products | 1 |
| Municipal planning | 1 |
| Transport | 4 |