ISSN lists?

From: Stuart Yeates <stuart.yeates_at_nyob> Date: Fri, 17 Oct 2014 02:16:06 +0000 To: CODE4LIB_at_LISTSERV.ND.EDU

My understanding is that there is no universal ISSN list but that worldcat allows querying of their database by ISSN. 

Which method of sampling the ISSN namespace is going to cause least pain? http://www.worldcat.org/ISSN/ seems to be the one talked about, but is there another that's less resource intensive? Maybe someone's already exported this data?

cheers
stuart
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