Gerd Hafner Books

Der Erste Petrusbrief

By Huber Konrad, Martin Ebner, Gerd Hafner

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Kontexte neutestamentlicher Christologien

By Huber Konrad, Stefan Schreiber, Gerd Hafner

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Kontexte neutestamentlicher Christologien

By Stefan Schreiber, Huber Konrad, Gerd Hafner

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Die historische Ruckfrage in der neutestamentlischen Exegese

By Huber Konrad, Stefan Schreiber, Gerd Hafner

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"Bei allen Neuaufbrüchen der Exegese in den vergangenen Jahrzehnten stand nicht grundsätzlich zur Debatte, dass sich die neutestamentliche Wissenschaft als historisch arbeitend versteht. Was das ge...

Nutzlich zur Belehrung (2 Tim 3,16)

By Gerd Hafner

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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.