Christopher Spehr Books

Aufklarung und Okumene

By Christopher Spehr

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Luther Und Das Konzil Zur Entwicklung Eines Zentralen Themas in Der Reformationszeit Beitrage Zur Historischen Theologie German Edition

By Christopher Spehr

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Lutherjahrbuch 81. Jahrgang 2014

By Christopher Spehr

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Theologie / Kirchengeschichte / Theologiegeschichte Das Lutherjahrbuch ist das bedeutendste Organ der internationalen Lutherforschung und wird im Auftrag der Luther-Gesellschaft herausgegeben. Der...

Lutherjahrbuch 82

By Christopher Spehr

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Luther als Lehrer und Reformer der Universitat

By Christopher Spehr

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Lutherjahrbuch 81. Jahrgang 2014

By Christopher Spehr

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Theologie / Kirchengeschichte / Theologiegeschichte Das Lutherjahrbuch ist das bedeutendste Organ der internationalen Lutherforschung und wird im Auftrag der Luther-Gesellschaft herausgegeben. Der...

Lutherjahrbuch 82

By Christopher Spehr

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Lutherjahrbuch 81. Jahrgang 2014

By Christopher Spehr

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BeitraGe Zur Historischen Theologie Luther und das Konzil

By Christopher Spehr

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Herder Luther

By Christopher Spehr, Michael Maurer

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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.