What are ISSN and ISBN?


International Standard Serial Number (ISSN) is an 8-digit international number assigned to each print or digital serial publication. Serial Publications include newspapers, annual publications, journals, and magazines. ISSN International Centre provides more information on ISSN.

International Standard Book Number (ISBN) is the standardised 13-digit international number that uniquely identifies a monographic /book publication. Since ISBNs are unique, it aids in locating the books quickly.

ISBNs were 10-digits in length till 1 January 2007, when the ISBN system adopted a 13-digit format. If you are given a 10-digit ISBN, you can convert it to a 13-digit ISBN using the converter.

The National Library Board provides more information on ISSN and ISBN.

  • Last Updated Oct 04, 2022
  • Views 22
  • Answered By Suhasini Rajendran

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