!!! Overview
[{$pagename}] ([ISSN]) is an eight-digit is a numeric [Unique Identifier] used to identify newspapers, journals, magazines and periodicals of all kinds and on all media–print and electronic.



[{$pagename}] is especially helpful in distinguishing between serials with the same title. 

[{$pagename}] are used in ordering, cataloging, interlibrary loans, and other practices in connection with serial literature.

[{$pagename}] was first drafted as an [International Organization for Standardization] ([ISO]) international standard in [1971|Year 1971] and published as [ISO 3297] in [1975|Year 1975]. [ISO] subcommittee TC 46/SC 9 is responsible for maintaining the standard.


!! [{$pagename}] format
[{$pagename}] is an eight digit code, divided by a hyphen into two four-digit numbers. As an [integer] number, it can be represented by the first seven digits. The last code digit, which may be 0-9 or an X, is a [Check Digit]. Formally, the general form of the ISSN code (also named "ISSN structure" or "ISSN syntax") can be expressed as follows:
{{{NNNN-NNNC}}}

[{$pagename}] is typically shows on the items as a [EAN] barcode with a [GS1 Company Prefix] of 977 similar to:\\
[{Image src='International Standard Serial Number/640px-Issn-barcode-explained.png' caption='By Petermorgan at English Wikipedia, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=56819640' align=left}]. 
\\

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
----
* [#1] - [International_Standard_Serial_Number|Wikipedia:International_Standard_Serial_Number|target='_blank'] - based on information obtained 2017-10-28-