Markus Heitz Books

Oneiros

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In Leipzig an undertaker named Konstantin Korff harbours a cruel secret. In Minsk an unscrupulous scientist performs questionable experiments. And in Paris a plane that is about to take off crash...

Raging Storm

By Markus Heitz

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The Hidden Land lies broken. In the terrible battle to save the home of the dwarves, elves and humans, many sacrifices were made by great heroes, and at the last the älfar were defeated. Aiphatòn,...

In Leipzig an undertaker named Konstantin Korff harbours a cruel secret. In Minsk an unscrupulous scientist performs questionable experiments. And in Paris a plane that is about to take off crashes...

Les Nains

By Markus Heitz

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Le gouffre noir

By Markus Heitz

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Le Mage maudit

By Markus Heitz

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La Guerre des Nains

By Markus Heitz

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Le Pays Sûr est en liesse. Pourtant, tandis que Tungdil et ses amis se réjouissent de la victoire sur le Mage renégat Nôd'onn, une horde d'Orcs s'apprête à fondre sur le Royaume nain. Les repoussan...

La revanche des nains

By Markus Heitz

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Le destin des nains

By Markus Heitz

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Doors

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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.