Update textbook.es.md

f55f1746 · Claude Meny · 02767201 · f55f1746
Commit f55f1746 authored Sep 08, 2020 by Claude Meny
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--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/01.plane-refracting-surface/01.plane-refracting-surface-main/textbook.es.md
+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/01.plane-refracting-surface/01.plane-refracting-surface-main/textbook.es.md
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 title: 'Superficie refractaria '
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 ### Superficie refractaria