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International Standard Serial Number - Wikipedia, the free https://en.wikipedia.org/wiki/International_Standard_Serial_Number An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication. The ISSN is especially helpful in 嫖宿幼女罪

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“ISSN”和“CN”刊号的区别_医学教育网 http://www.med66.com/gaojizige/gl201205304642.shtml 1、一般正规期刊均有“ISSN”和“CN”刊号。“ISSN”表示国际标准刊号,“CN”表示国内统一刊号,两者相比,“CN 倒颜文字

ISSN | http://www.issn.org/ Information on the ISSN, which identifies periodicals worldwide, whether in printed form or other media (including online).