Christophe Wargny Books

Aristide

By Christophe Wargny, Jean Bertrand Aristide

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February 7,1991: Jean-Bertrand Aristide, a parish priest, is sworn in as Haiti's first democratically elected president. For the first time, Haiti, with its land and people ravaged by human corrupt...

Haiti n'existe pas

By Christophe Wargny

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Jacques Gaillot

By Christophe Wargny

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Monseigneur Gaillot, provocateur ou prophete?

By Christophe Wargny

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La peche aux couteaux

By Christophe Wargny

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A Vandoncourt, c'est tous les jours dimanche

By Christophe Wargny

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Mairies frappees d'autogestion

By Christophe Wargny

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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.