ISSN is the standard international serial publication number, which is the abbreviation of the standard international serial publication number. It is a unique identification code assigned to continuous publications (such as newspapers, periodicals, yearbooks, etc.) of various content types and carrier types. ISSN is distributed by international centers, national centers and regional centers.
Each group of ISSN consists of eight digits, which are divided into two segments with four digits each, and the segments are connected by a "-"sign, in which the last digit of the latter segment is the inspection number, such as ISSN0211-9153; Periodicals generally sold in Hong Kong must be registered in local newspapers and periodicals. If they are not sold as gifts, they don't need to be registered in local newspapers and periodicals.
Extended data:
Characteristics of periodical numbers;
Applying for the International Journal Number (ISSN) can make publications conform to international standards. As long as the names of publications recognized by the United Nations are not duplicated, they can be used, and the periodical numbers are valid for a long time.
The international standard periodical number can accurately and quickly identify the name and publishing unit of a periodical (newspaper/magazine, etc.). ). This system has been used in most countries all over the world and has become a prominent symbol of standard journals. (In some countries or regions, in addition to the international standard periodical number, standard periodical publications also require national or local periodical numbers to facilitate management. )
Baidu encyclopedia -ISSN number
Baidu Encyclopedia-International Serial Number