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| Wellentheorie f | |||
| Wellentheorie f (des Lichts) | |||
| Undulationstheorie f | |||
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| Wellentheorien n | |||
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wave theory : 12 phrases in 6 subjects |
| General | 3 |
| Life sciences | 2 |
| Natural resourses and wildlife conservation | 1 |
| Optics branch of physics | 3 |
| Physics | 2 |
| Technology | 1 |