Istwox allows you to deal with ISBN, ISSN, ISRC, ISMN, ISTC and ISAN codes.
Features are basic, but you can check code validity, get some formats…
This Gem use ISXX codes, where XX is variable, so it is IS2X then I named it Istwox…
Yes, when I have some times to write them. But in fact, it is very simple and basic to use…
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