Joachim Jahns Books

Herr Mittelmass 1949 - 1995

By Fritz Jochen Kopka, Wolfgang Hutt, Willi Sitte, Joachim Jahns, Werner Ziegler

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Ratsel Dali

By Joachim Jahns, Juliane Jahns

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Als die Malerin Juliane Jahns in den Bann der Bilderwelt Salvador Dalis gerät, wird der weltberühmte Künstler zum Thema ihrer Malerei und Poesie sowie zum Objekt ihrer ästhetischen Überlegungen. Im...

Der Warschauer Ghettokonig

By Joachim Jahns

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Erwin Strittmatter und die SS Gunter Grass und die Waffen SS

By Joachim Jahns

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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.