Marc Wellmann Books

Der Jahrestag der Schlacht von Waterloo (18. Juni 1815) dient dem Haus am Lützowplatz als Anlass für die Auseinandersetzung mit Adolph von Lützow und dem nach ihm benannten Freikorps in Form einer...

Berlin.Status 1

By Marc Wellmann, Sven Druhl, Christoph Tannert, Christian Malycha

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Filip Markiewicz

By Marc Wellmann, Clement Minighetti, Max Dax, Filip Markiewicz

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Margret Eicher

By Marc Wellmann, Michael Buhrs

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Anna Meyer

By Marc Wellmann, Anna Meyer

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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.