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| Luftreinhaltung f | |||
| Luftverunreinigungskontrolle f | |||
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| Luftreinhaltung f (Umweltschutz) | |||
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Air Pollution Control : 14 phrases in 7 subjects |
| Chemistry | 1 |
| Environment | 5 |
| General | 3 |
| Natural resourses and wildlife conservation | 2 |
| Polymers | 1 |
| Technology | 1 |
| Transport | 1 |