Hello and welcome everyone! Here is the page where you can find the ISBN for some of the series that run in "Ribon"
Ribon Titles:
Nurse Angel Ririka SOS
#1 (Japanese version) ISBN4-08-853-815-3
Hime-chan No Ribon
#1 (Chinese version) 957-25-2020-2
#2 (Japanese version) ISBN4-08-853580-4
#4 (Chinese version) 957-25-2023-7
#10 (Japanese version) ISBN4-08-853770-X
