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Deleted 01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/05.optical-instruments-use/topic.en.md, 01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/05.optical-instruments-use/topic.es.md, 01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/05.optical-instruments-use/topic.fr.md files