Update textbook.es.md

77c8f18e · Claude Meny · 0362f123 · 77c8f18e
Commit 77c8f18e authored Sep 06, 2020 by Claude Meny
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--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/04.fermat-principle/02.fermat-principle-overview/textbook.es.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/02.geometrical-optics-foundings/04.fermat-principle/02.fermat-principle-overview/textbook.es.md
 ---
 title: 'El principio de Fermat T'
+published: false
+visible: false
 ---