Helmut Hoping Books

Compendium of creeds definitions and declarations on matters of faith and morals

By Heinrich Denzinger, Anne Englund Nash, Helmut Hoping, Robert L. Fastiggi, Peter Hunermann

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"This compendium of theological-historical source texts, in a bilingual edition, is completely revised and extended to the pontificate of Benedict XVI. With its unique wealth of official church doc...

Weisheit als Wissen des Ursprungs

By Helmut Hoping

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Anstossige Wahrheit des Glaubens

By Joseph Ratzinger

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Universitat ohne Gott

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Jesus und der Papst

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Priestertum Christi und priesterlicher Dienst

By George Augustin

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Mein Leib fur euch gegeben

By Helmut Hoping

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Wieviel Theologie vertragt die Offentlichkeit?

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Zweites Vatikanum

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Monotheismus Israels und christlicher Trinitatsglaube

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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.