Christian Schuffels Books

Kirche und Adel in Norddeutschland

By Peter Marmein, Thomas Scharf Wrede, Christian Schuffels

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The Aufschwörungsbuch of the Hildesheim Cathedral chapter lists the families and coats of arms of all 211 Cathedral canons from the 1670s to 1810. The manuscript volume is now located in the Gottf...

Das Brunograbmal im Dom zu Hildesheim

By Christian Schuffels

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Walbecker Forschungen

By Berthold Heinicke, Christian Schuffels

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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.