Update textbook.en.md

5 years ago · 7b885adb35
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
@ -4,6 +4,8 @@ published: true
 routable: false
 visible: false
 lessons:
    - slug:
      order:
    - slug: cylindrical-coordinates-linear
      order: 1
 ---