Update textbook.en.md

8ea386a6 · Claude Meny · 744f8f69 · 8ea386a6
Commit 8ea386a6 authored Sep 08, 2020 by Claude Meny
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textbook.en.md ...ts-design/07.microscope/01.new-course-main/textbook.en.md +2 -0

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--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/07.optical-instruments-design/07.microscope/01.new-course-main/textbook.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/07.optical-instruments-design/07.microscope/01.new-course-main/textbook.en.md
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 title: 'new course : main'
+published: false
+visible: false
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 new course : main
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