| Spectroscope 2ndeA et 2ndeB | ||
| Spectre d'une lampe fluocompacte |
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| Spectre d'une lampe fluocompacte |
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| Spectre d'une lampe fluocompacte |
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| Spectroscope papillotte |
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| Spectroscope espana |
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| Spectroscope Larzac |
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| Spectroscope moderne 1 |
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| Spectroscope moderne 2 |
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