Ulrike Ludwig Books

Das Duell

By Ulrike Ludwig, Barbara Krug Richter, Gerd Schwerhoff

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Das Duell im Alten Reich

By Ulrike Ludwig

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Am Beginn der Habilitationsschrift von Ulrike Ludwig steht die Frage: Was ist ein Duell? Die irritierende Antwort lautet: Ein Duell war im Alten Reich bis ins 18. Jahrhundert keineswegs jener verab...

Ehre und Pflichterfullung als Codes militarischer Tugenden

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Philippismus und orthodoxes Luthertum an der Universitat Wittenberg

By Ulrike Ludwig

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Das Duell im Alten Reich

By Ulrike Ludwig

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Das Duell im Alten Reich

By Ulrike Ludwig

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Ehre und Recht

By Ulrike Ludwig, Sylvia Kesper Biermann, Alexandra Ortmann

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Krieg Militar und Migration in der Fruhen Neuzeit

By Matthias Asche

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Das Herz der Justitia

By Ulrike Ludwig

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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.