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Note that the ISBN hyphenation rule-base is a living document. This is a maintenance category of articles with invalid ISBNs. It is often included by means of the template {{Please check ISBN}}. If you fix an ISBN please remove the template or category from the article. Many article/ISBN problems are listed at WikiProject Check Wikipedia.
The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique. [a] [b] Publishers purchase or receive ISBNs from an affiliate of the International ISBN Agency. [2] A different ISBN is assigned to each separate edition and variation of a publication, but not to a simple reprinting of an ...
checksum – ISBN has one or more incorrect digits; look for typos and transposition invalid character – ISBN has one or more 'digits' that is not in the allowed set appropriate to ISBN length invalid prefix – 13-digit ISBNs must begin with '978' or '979' invalid form – 10-digit ISBNs with the mis-positioned 'X' character
OTOH, contributors with an ISBN from the book in their hand may feel obligated to add the ISBN to the article. Perhaps we could create a template {{Invalid ISBN|2-204-19850-9}} that results in <!-- Invalid ISBN: 2-204-19850-9 -->. Would that cause google searchs for the invalid ISBN to bring up the article?
The ISBN-13 is often found near the barcode and will start with either 978- or 979-. However, if an older work only lists an ISBN-10, use that in citations instead of calculating an ISBN-13 for it. This is because ISBNs are often used as search strings and checksum differences between the two forms make it difficult to find items listed only ...
This category is populated by {} and {} (with parameter invalid#=yes) and by {{Listed Invalid ISBN}}, to indicate that although the given ISBN is malformed it is indeed printed on the work. These malformed ISBNs can still be looked up via Special:BookSources in the usual way despite the prominent warning — it just means that fewer Find this ...
For example | isbn = {{Listed Invalid ISBN|123-456-7890-123}} is incorrect use. Usage This template should only be used in limited cases when an editor knows that the International Standard Book Number (ISBN) printed in a source publication is invalid.
If you remove the {{ISBN missing}} template without fixing the problem in one of the above ways, someone else will come along later and flag the reference with {{ISBN missing}} again! TemplateData This is the TemplateData for this template used by TemplateWizard , VisualEditor and other tools.