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ISBN - Wikipedia
List of ISBN registration groups - Wikipedia
International Standard Book Number - Simple English Wikipedia…
International Standard Book Number | ISBN, Identification, …
International Standard Book Number - Wikipedia, the free
About the ISBN standard | ISBN.org
About ISBN | Global Register of Publishers
What is an ISBN? | International ISBN Agency
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Wikipedia:ISBN - Wikipedia
International Standard Book Number - Wikiversity
The International ISBN Agency | International ISBN Agency
How to Understand an ISBN Code - wikiHow
ISBN (identifier) - Mepedia
ISBN - Wikipedia, the free encyclopedia - Wikinews
International Standard Book Number - Wikipedia
Library of Congress Control Number - Wikipedia
Bowker Home Page
ISSN - Wikipedia
ISBN – Wikipédia
ISBN - Wikipedia
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