Rainer Wekwerth Books

Camp 21

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Fünf Jugendliche. Sie haben gekämpft, sich gequält und zwei Welten durchquert, um die rettenden Tore zu erreichen. Und wieder stellt sie das Labyrinth vor unmenschliche Herausforderungen, denn auch...

Das Labyrinth ist ohne Gnade

By Rainer Wekwerth

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Camp 21

By Rainer Wekwerth

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Pheromon 1. Sie riechen dich

By Thariot, Rainer Wekwerth

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Pheromon 2 Sie sehen dich

By Thariot, Rainer Wekwerth

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Pheromon 3 Sie jagen dich

By Thariot, Rainer Wekwerth

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Beastmode 1

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Damian Die Wiederkehr des gefallenen Engels

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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.