Claude Helft Books

Le Secret de la fee

By Elisem, Claude Helft

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On dort

By Nathalie Baillot, Claude Helft

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On prend des medicaments

By Michel Boucher, Claude Helft

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Cet album réunit neuf situations d'urgence ou de danger où la seule chose possible, c'est d'obéir à ce que disent les parents : traverser la rue, rouler en voiture, se tenir à distance de tout ce q...

Les amis de Zen

By Claude Helft

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Une Petite Soeur particuliere

By Madeleine Brunelet, Claude Helft

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En Voiture Livre mousse

By Olivier Cauquil

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La mythologie egyptienne

By Claude Helft

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La Mythologie chinoise

By Claude Helft

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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.