ISBNnumeroon

ISBNnumeroon is a Finnish term that translates to "ISBN number" in English. An ISBN, or International Standard Book Number, is a unique numerical identifier for books. It is used by publishers, booksellers, libraries, and other organizations to track books for inventory, ordering, and sales purposes. Each ISBN is assigned to a specific edition and format of a book. For example, a hardcover edition, a paperback edition, and an e-book version of the same title will each have a different ISBN.

The ISBN system was developed in the United Kingdom by David Whitaker in 1965 and adopted internationally in 1970. Originally a 10-digit number, it was expanded to 13 digits in 2007 to accommodate the growing number of published titles. The ISBN consists of five parts: a prefix element (currently EAN), group element (country or language group), publisher element, title element, and a check digit. This check digit is a single digit calculated using a specific algorithm, which allows for error detection when the ISBN is entered or transmitted. ISBNnumeroon is therefore the Finnish way of referring to this essential bibliographic identifier.