Hedwig Rockelein Books

Biographie als Geschichte

By Hedwig Rockelein

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Kannibalismus und europaische Kultur

By Hedwig Rockelein

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Gandersheim und Essen

By Hedwig Rockelein, Martin Hoernes

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Maria in der Welt: Marienverehrung im Kontext der Sozialgeschichte 10.-18. Jahrhundert

By Hedwig Rockelein, Claudia Opitz, Gabriela Signori

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Devotional Cross Roads Practicing Love of God in Medieval Jerusalem Gaul and Saxony

By Hedwig Rockelein

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The collection of essays presented in ?Devotional Cross-Roads: Practicing Love of God in Medieval Gaul, Jerusalem, and Saxony? investigates test case witnesses of Christian devotion and patronage f...

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.