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-- This template is a copy of the ISXN validation code from Module:Citation/CS1 -- which allows for validating ISBN, ISMN, and ISSN without invoking a citation template local p = ----------------------------< IS _ V A L I D _ I S X N >----------------------------------------------------- ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in check_isbn(). If the number is valid the result will be 0. Before calling this function, issbn/issn must be checked for length and stripped of dashes, spaces and other non-isxn characters. local function is_valid_isxn (isxn_str, len) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「モジュール:Check isxn」の詳細全文を読む スポンサード リンク
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