International Standard Text Code (ISTC)
The International Standard Text Code is a new ISO identifier which is used to collocate or link the various manifestations of a textual work.
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ISTC: A Work in Progress by Michael Holdsworth (March 2010) has been jointly published by BIC and the Book Industry Study Group.
International Standard Serial Number (ISSN)
and:
http://www.bl.uk/bibliographic/issn.html