The ISSN is the international identifier for serials and other continuing resources, in the electronic and print world. Besides its tasks of edition and maintenance of the ISSN Register, the ISSN International Centre coordinates the activity of the 89 National Centres.
The ISSN Register is the worldwide bibliographic database which contains more than 2,5 million ISSN bibliographic records created and updated for the identification of the serials. It is used throughout the information chain by libraries, subscription agencies, researchers or universities. It is available through different kinds of subscription: the ISSN Portal, the ISSN Data File, Z39.50, ISSN Premium, APIs.
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