Is it possible to find all ISSNs assigned to a journal title in Crossref (using XML API and pubid?)?
How do I find all ISSNs assigned to a journal title in Crossref?
Thanks for your question.
There’s no way to do this with the XML API. Your best option is probably to search the Title List or download the Title List csv file.
There’s a way to sort of approximate what you’re looking for using the REST API, but that will take multiple steps to ensure that you’re not missing any ISSNs. So, I think the Title List would work better.