Gerold Bonnen Books

Das Stadtarchiv Worms und seine Bestande

By Gerold Bonnen

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Unrecht und Recht

By Gerold Bonnen

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Kloster und Stifte von um 1200 bis zur Reformation

By Gerold Bonnen

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Stadtgestalt und Offentlichkeit

By Wolfgang Bruckle, Christian Behrer, Stephan Albrecht, Gerold Bonnen

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Schrei nach Gerechtigkeit

By Gerold Bonnen, Winfried Wilhelmy

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Um 1500 erhebt die Bevölkerung am Mittelrhein verstärkt Anspruch auf Wohlstand und politische Selbstbestimmung. Dem wirtschaftlichen Aufbruch folgt die Forderung nach sozialer Gerechtigkeit, in der...

Eine furchtbar ernste Zeit

By Gerold Bonnen

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Vereinigte Kasino und Musikgesellschaft Worms

By Gerold Bonnen, Ulrich Oelschlager

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Die Wormser Industriellenfamilie von Heyl

By Gerold Bonnen, Ferdinand Werner

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Der Mord und die Klage

By Gerold Bonnen, Volker Galle

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.