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| diffraktivt optisk variabelt mærke | |||
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diffractive optically variable device : 2 phrases, 1 sujets |
| Sciences naturelles | 2 |
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| diffraktivt optisk variabelt mærke | |||
|
diffractive optically variable device : 2 phrases, 1 sujets |
| Sciences naturelles | 2 |