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Update 12.temporary_ins/95.electromagnetism-in-media/10.propagation-lhi-media/10.main/textbook.fr.md

12.temporary_ins/95.electromagnetism-in-media/10.propagation-lhi-media/10.main/textbook.fr.md

 ---
 title: Ondes électromagnétiques dans la matière
-published: true
-routable: true
+published: false
+routable: false
 visible: false
 lessons:
     - slug: electromagnetic-static-field-or-waves-in-media