We've never had any problems sticking to ISO639-2 codes (in cases there isn't a shorter ISO639-1 code available). I'm interested in what sort of regional languages you might be dealing with where there are significant gaps in that standard? You might also look at ISO 639-3, which is quite comprehensive but also introduces a fair chunk of complexity: http://www-01.sil.org/iso639-3/download.asp Cheers, Craig Franklin On 2 June 2016 at 08:59, Greg Lindahl <[log in to unmask]> wrote: > Some of the Internet Archive's library partners are asking us about > language metadata for regional languages that don't have standard > codes. Is there a standard way of dealing with this situation? > > Overall we use MARC codes https://www.loc.gov/marc/languages/ which > were last updated in 2007. LOC also maintains ISO639-2 > https://www.loc.gov/standards/iso639-2/php/code_list.php last updated > in 2014. > > The languages in question are regional languages which are currently > lumped together in both standards. With the recent rise in interest > and funding for regional languages, it's no surprise that some > catalogers want to split these languages out into separate codes. > > Thanks! > > -- greg >