Update textbook.en.md

5 years ago · f0e2c1cc2e
1 changed files with 2 additions and 0 deletions
--- a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.en.md
+++ b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.en.md
@ -8,6 +8,8 @@ lessons:
      order:
    - slug: cylindrical-coordinates-linear
      order: 1
+    - slug: es-en-cylindrical-coordinates-exchange
+      order: 3
 ---
 <!--caligraphie de l'intégrale double curviligne-->
 $`\def\oiint{\displaystyle\mathop{{\iint}\mkern-18mu \scriptsize \bigcirc}}`$