Jean Pierre Guillet Books

Sihirli Toz

By Jean Pierre Guillet

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La machine a bulles

By Jean Pierre Guillet

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Dans son désir de plaire au roi, le magicien, Mouk Tchouk y va d'une autre invention polluante. Cette fois, le ciel, l'atmosphère, l'air sont frappés. Un conte écologique joliment illustré, suivi d...

La poudre magique

By Jean Pierre Guillet

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Le magicien Mouk-Mouk propose au roi, le père de Clémentine, de le débarrasser des insectes et autres bestioles qui attaquent ses plantes. La réussite est foudroyante : les plantes sont guéries, le...

Suda Hayat Var

By Jean Pierre Guillet

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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.