What is the unique classification number assigned to each individual magazine or periodical?

The unique classification number assigned to each individual magazine or periodical is the International Standard Serial Number, known as ISSN. This eight-digit number serves as a unique identifier for serial publications, including magazines, journals, and other ongoing series. The purpose of the ISSN is to facilitate the identification and cataloging of these publications, making it easier for libraries, retailers, and publishers to manage and track them in a consistent manner.

The ISSN system is crucial for bibliographic control, as it distinguishes one serial title from another, even if the titles are similar. This is particularly important in the age of digital publishing, where many similar or identical titles may exist in both print and electronic formats. Overall, the ISSN enhances the accessibility and discoverability of periodical literature in library systems and databases.