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An ISSN, or International Standard Serial Number, is a unique eight-digit number used to identify a print or electronic periodical publication. The ISSN system was adopted as international standard ISO 3297 in 1975.

Code format Edit

The format of the ISSN is an eight digit number, divided by a hyphen into two four digit numbers. The last digit, which may be 0-9 or an X, is a check digit.

Rail ISSN 0953-4563

The validity of an ISSN code format can be checked at, a facility provided by the ISSN International Centre.

You can check the validity of an ISSN by yourself using the technique of:

 ISSN 0317-8471
 0*8  3*7  1*6  7*5  8*4  4*3  7*2
  0  + 21 + 6 + 35 + 32 + 12 + 14
 = 120/11
 = 10 remainder 10
 subtract the remainder 10 from 11 leaving 1
 1 is the check digit

Code assignment Edit

ISSN codes are assigned by a network of ISSN National Centres, usually located at National Libraries and coordinated by the ISSN International Centre based in Paris. The International Centre is an intergovernmental organization created in 1974 through an agreement between Unesco and the French government. The International Centre maintains a database of all ISSNs assigned worldwide, the ISDS Register (International Serials Data System) otherwise known as the ISSN Register. The ISSN Register contains ISSN codes and descriptions for more than one million periodicals[1] with around 50,000 new records added yearly.

Comparison to ISBN Edit

ISSN and ISBN codes are similar in concept, where ISBN numbers are assigned to individual books[2]. For particular issues of a periodical an ISBN might be assigned in addition to the ISSN code for the periodical as a whole. Unlike the ISBN code, an ISSN is an anonymous identifier associated with a periodical title, containing no information as to the publisher or its location. For this reason, a new ISSN is assigned to a periodical each time it undergoes a major title change.

Availability Edit

The ISSN Register is not freely available for interrogation on the web but is available on a subscription basis. There are several routes to the identification and verification of ISSN codes for the general public.

  • the print version of a periodical typically will include the ISSN code as part of the publication information
  • most, though not all, periodical websites contain ISSN code information
  • derivative lists of publications will often contain ISSN codes; these can be found through on-line searches with the ISSN code itself or periodical title

Though an ISSN checking facility is available, this is a tool for checking the validity of an ISSN number format, not for querying the ISSN Register to determine what periodical the input number is associated with.

External link Edit

References Edit

  1. The one million milestone was reached in 2001 according to the ISSN statistics information page. Retrieved July 17, 2005.
  2. Bookchamber ISBN

See also Edit

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