ISSN used for the identification of serial publications.
An ISSN can be assigned to any serial publication, whether it is printed or available on any other medium (CD-ROM, floppy disk, online publications).
An ISSN can only be used with serial publications.
ISSN is an 8 digit number encoded using EAN-13 symbology with "977" as the prefix. The eigth digit of the ISSN is a control digit calculated using a modulo 11 algorithm from the preceding 7 digits.
The basic difference between ISBN and ISSN is that an ISSN is assigned to serial publications; ISBN is assigned to monographs ("books"). An ISSN can be assigned to a series of monographs as such; and an ISBN will be assigned to each separate book of the series.
One can use Label Flow™ barcode software for printing ISSN labels or use Asset Track for managing library of publications.