Nombor Siri Piawai Antarabangsa: Perbezaan antara semakan

 

==Taksiran kod==

 

ISSN and [[International Standard Book Number|ISBN]] codes are similar in concept, where ISBNs are assigned to individual [[book]]s. An ISBN might be assigned for particular issues of a periodical, in addition to the ISSN code for the periodical as a whole. An ISSN, unlike the ISBN code, is an anonymous identifier associated with a periodical title, containing no [[information]] as to the [[publisher]] or its [[location (geography)|location]]. For this reason a new ISSN is assigned to a periodical each time it undergoes a major title change.

 

Since the ISSN applies to an entire periodical a new identifier, the [[Serial Item and Contribution Identifier]], was built on top of it to allow references to specific volumes, articles, or other identifiable components (like the [[table of contents]]).

 

The ISSN Register is not freely available for interrogation on the web but is available by subscription. 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

<!-- Though an [http://www.issn.org:8080/English/pub/faqs/issn/issnchecking ISSN checking facility] (dead link) 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. -->

 

An ISSN can be encoded as a [[Uniform Resource Name|URN]] by prefixing it with "urn:issn:".<ref>[http://tools.ietf.org/html/rfc3044 Using The ISSN (International Serial Standard Number) as URN (Uniform Resource Names) within an ISSN-URN Namespace] — RFC 3044</ref> For example ''Rail'' could be referred to as "urn:issn:1534-0481". If the checksum digit is "X" then it is always encoded in uppercase in a URN.

 

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* [[Amazon Standard Identification Number|ASIN]] (Amazon Standard Identification Number, a proprietary)

* [[Serial Item and Contribution Identifier|SICI]] (Serial Item and Contribution Identifier)

 

{{reflist}}

 

*[http://www.oclc.org/firstsearch/periodicals/index_title.asp Search by title] to find an ISSN

*[http://www.issn.org/ ISSN International Centre]