...
ISxN: The ISSN is the standardized international code which allows the identification of any serial publication, including electronic serials, independently of its country of publication, of its language or alphabet, of its frequency, medium, etc. The ISSN number,therefore, preceded by these letters, and appears as two groups of four digits, separated by a hyphen , has no signification in itself and does not contain in itself any information referring to the origin or contents of the publication. An International Standard Book Number/ISBN "identifies the title or other book-like product (such as an audiobook) to which it is assigned, but also the publisher to be contacted for ordering purposes." ISBNs are 13-digit numbers (formerly 10-digits); the various elements of the number are separated by a hyphen ( - ). Used by staff and publishers. Sample ISBN: 6780674059111.
...