Jacques Delval Books

Un Barrage dans la vallee

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On se prépare à inonder une vallée de Haute-Provence. Les opinions des habitants sont partagées. Un récit d'intérêt régional, sans grand suspense, agrémenté d'une petite trame amoureuse.

Laura et le mystere de la chambre rose

By Jacques Delval

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Laura va habiter chez sa grand-tante. Sitôt arrivée, elle s'aperçoit que cette maison abrite non seulement des chats, mais un drame. Elle découvre, après une brève enquête cousue de fil blanc, comm...

Laura et le mystere de la chambre rose

By Jacques Delval

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Le Train d El Kantara

By Jacques Delval

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Un barrage dans la vallee

By Jacques Delval

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Le Fils du garcon boucher

By Jacques Delval

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Salut bahut

By Jacques Delval

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Noria

By Jacques Delval

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Je suis invisible

By N A

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La lyre mysterieuse Jeunesse

By Jacques Delval

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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.