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The International Standard Book Number (ISBN) is a unique identification system for monographic publications. Not only print products with different types of binding but also e-books with their different formats are clearly and machine-readably identified. This makes the ISBN the basis for a smooth trade with books in any form and across national borders.
The administration of ISBN for Germany is the responsibility of the ISBN agency, which belongs to MVB.
More information: https://www.german-isbn.de
