Jorg Ernesti Books

Die Entdeckung der Okumene

By Wolfgang Thonissen, Jorg Ernesti

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Ferdinand von Furstenberg: Geistiges Profil eines barocken Furstbischofs

By Jorg Ernesti

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Okumene im Dritten Reich

By Jorg Ernesti, J Org Ernesti

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Die Entdeckung der Okumene

By Jorg Ernesti, Wolfgang Thonissen

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"Leo XIII., der von 1878 bis 1903 im Amt war, war bei seinem Tod der älteste Papst der Kirchengeschichte. Eigentlich als Übergangskandidat gewählt, wurde seine 25-jährige Amtszeit doch in mehrfache...

Princeps Christianus und Kaiser aller Romer

By Jorg Ernesti

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Kleine Geschichte der Okumene

By Jorg Ernesti

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Personenlexikon Okumene

By Jorg Ernesti

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Paul VI

By Jorg Ernesti

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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.