Martin Wallraff Books

"Christianity and the book - this is hardly a superficial relationship. Their histories date back to about the same period: the rise of Christianity and the widespread adoption of the codex both oc...

Kodex und Kanon

By Martin Wallraff

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Religiose Toleranz

By Martin Wallraff

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Martin Luther in Rom

By Arnold Nesselrath, Michael Matheus, Martin Wallraff

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xvii, 534 pages : 25 cm

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.