[Koha-bugs] [Bug 41060] Add a value_builder to check if ISSN is valid

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=41060 --- Comment #11 from Marcel de Rooy <m.de.rooy@rijksmuseum.nl> --- Looking here now -- You are receiving this mail because: You are watching all bug changes.