Proposal : Update Manga Hyouryuu Kyoushitsu published date

Proposal details

This proposal will make the following change(s):

Update the published date of the manga Hyouryuu Kyoushitsu

Change the published date from :
Start Date :
Day : Unknown
Month : Unknown
Year : Unknown
-
End Date :
Day : Unknown
Month : Unknown
Year : Unknown

to

Start Date :
Day : Unknown
Month : Unknown
Year : 1972
-
End Date :
Day : Unknown
Month : Unknown
Year : 1974

Based on the following reason: Missing

With the source: MAL https://myanimelist.net/manga/970/Hyouryuu_Kyoushitsu