International Standard Serial Number (ISSN)

Feature	Description	Additional Details
What is it?	An 8-digit unique identifier for serial publications.	Also known as "International Standard Serial Number".
Purpose	- Distinguish between serials with similar titles. Enables clear identification even if titles change slightly.	- Facilitate ordering, cataloging, and search. Streamlines record-keeping and retrieval in libraries and databases.
Scope	- Serial publications: Issued in successive parts, with no predetermined conclusion, and intended to continue indefinitely.	Examples: journals, magazines, newspapers, newsletters, annual reports, yearbooks, proceedings, etc.
Structure	- Two groups of four digits: Separated by a hyphen (e.g., 1234-5678).	- Prefix ISSN (p-ISSN): Identifies the print version.
Check Digit	The eighth digit, calculated using a specific formula, ensures accuracy and protects against errors.
Assignment	- ISSN National Centres: Each country has a designated center responsible for assigning ISSNs.	- ISSN International Centre: Coordinates the global ISSN network and maintains standards.
Benefits	- Accurate identification and tracking of serials. Reduces confusion and duplication of effort.	- Simplified resource sharing and exchange. Facilitates interlibrary loan and global access.
Additional Notes	- ISSNs are not assigned to books, monographs, or one-time publications.	- ISSNs may change if a serial undergoes a significant title change or format switch.