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ISSN

How to generate ISSN barcode?
Free Online ISSN Barcode Generator. Enter text to encode, select size and output format, and click the “Generate Barcode” button. International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine.

What is an ISSN number?
An International Standard Serial Number ( ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine. The ISSN is especially helpful in distinguishing between serials with the same title.

Where can I find the ISSN code for a serial?
The print version of a serial typically will include the ISSN code as part of the publication information. Most serial 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 serial title.

How many numbers are in a EAN barcode?
EAN codes consist of 13 numbers, and encodes a country code, a company code and a product code. EAN barcode can be used all over the world, except for the USA and Canada where UPC barcodes are used. What is a UPC barcode? A UPC barcode is the second most common type of retail barcode.

ISSNs can be encoded in EAN-13 bar codes with a 977 "country code" (compare the 978 country code ("bookland") for ISBNs), followed by the 7 main digits of the ISSN (the check digit is not included), followed by 2 publisher-defined digits, followed by the EAN check digit (which need not match the ISSN check digit).
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An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine. The ISSN is especially helpful in distinguishing between serials with the same title. ISSNs are used in ordering, cataloging, interlibrary loans, and other practices in connection with serial literature.

The ISSN system was first drafted as an International Organization for Standardization (ISO) international standard in 1971 and published as ISO 3297 in 1975. ISO subcommittee TC 46/SC 9 is responsible for maintaining the standard.

When a serial with the same content is published in more than one media type, a different ISSN is assigned to each media type. For example, many serials are published both in print and electronic media. The ISSN system refers to these types as print ISSN (p-ISSN) and electronic ISSN (e-ISSN). Consequently, as defined in ISO 3297:2007, every serial in the ISSN system is also assigned a linking ISSN (ISSN-L), typically the same as the ISSN assigned to the serial in its first published medium, which links together all ISSNs assigned to the serial in every medium. 

ISSN-L is a unique identifier for all versions of the serial containing the same content across different media. As defined by ISO 3297:2007, the "linking ISSN (ISSN-L)" provides a mechanism for collocation or linking among the different media versions of the same continuing resource. The ISSN-L is one of a serial's existing ISSNs, so does not change the use or assignment of "ordinary" ISSNs; it is based on the ISSN of the first published medium version of the publication. If the print and online versions of the publication are published at the same time, the ISSN of the print version is chosen as the basis of the ISSN-L.

The International Centre maintains a database of all ISSNs assigned worldwide, the ISDS Register (International Serials Data System), otherwise known as the ISSN Register. At the end of 2016, the ISSN Register contained records for 1,943,572 items.[10] The Register is not freely available for interrogation on the web, but is available by subscription.

The print version of a serial typically will include the ISSN code as part of the publication information.
Most serial 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 serial title.
WorldCat permits searching its catalog by ISSN, by entering "issn:" before the code in the query field. 

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

Separate ISSNs are needed for serials in different media (except reproduction microforms). Thus, the print and electronic media versions of a serial need separate ISSNs, and CD-ROM versions and web versions require different ISSNs. However, the same ISSN can be used for different file formats (e.g. PDF and HTML) of the same online serial.

This "media-oriented identification" of serials made sense in the 1970s. In the 1990s and onward, with personal computers, better screens, and the Web, it makes sense to consider only content, independent of media. This "content-oriented identification" of serials was a repressed demand during a decade, but no ISSN update or initiative occurred. A natural extension for ISSN, the unique-identification of the articles in the serials, was the main demand application. An alternative serials' contents model arrived with the indecs Content Model and its application, the digital object identifier (DOI), an ISSN-independent initiative, consolidated in the 2000s.

Only later, in 2007, ISSN-L was defined in the new ISSN standard (ISO 3297:2007) as an "ISSN designated by the ISSN Network to enable collocation or versions of a continuing resource linking among the different media".

The ISSN Network is comprised of 93 member countries and regularly welcomes new members.

Its missions include:
assigning ISSNs,
 maintaining a world database of serial publications,
 serving as the standardisation authority in this area, and
 distributing information concerning the ISSN and promoting its use.

ISSN National Centers are generally part of agencies that play an overriding role in the scientific and technical information system of the countries concerned.

Their mission includes:
– assigning ISSNs,
– maintaining local ISSN databases, and
– promoting the overall system.

ISSN National Centres are in contact with the publishers and bibliographical agencies of their countries, often in connection with their respective legal deposit systems.

The ISSN International Centre is located in Paris. It is responsible for:
– maintaining and publishing the ISSN Portal,
– coordinating the activities of the ISSN National Centres, and
– assigning ISSNs to international publications and publications published in countries that do not have an ISSN National Centre.

This part talks about the ISSN barcode. The International Standard Serial Number (ISSN) is an eight-digit number used for printed or electronic periodical publications like magazines, etc. This ISSN system was drafted as an International Standard in 1971 and published as ISO 3297 in 1975.

ISSN Structure
The structure of ISSN is as below:
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ISSN Barcode Size Setting
As for ISSN size setting, three factors should be considered: bar width (i.e. X dimension) barcode width and height.

ISSN Data Encoding
ISSN encodes numeric digits through 0-9 with a fixed length of 8 characters. The number always starts with a "977".

Please note that the encoded 8 digits are separated by a hyphen in the middle, which simply serves as a distinction from other barcode symbols. You don't need to input it as data, OnBarcode ISSN generator will automatically display it for you.

ISSN Encoding Format
ISSN barcode symbology uses the similar encoding format as that of EAN-13 with a compulsory module 10 checksum digit.


ISSN Barcode Checksum Digit
ISSN specifications require a compulsory module 11 checksum digit, which will be automatically created by OnBarcode ISSN Barcode Generators.

ISSN Barcode Add-On Symbols
To encode additional information like price, ISSN allows for a 2-digit add-on symbol or a 5-digit add-on symbol. You can generate an ISSN barcode with supplemental symbol by choosing in selecting "ISSNSup2" / "ISSNSup5" in ISSN barcode generator components. Here are two examples of ISSN with add-on symbols.

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