Christophe Nicolas Books

Quel est donc le secret de cette directrice si parfaite en toutes circonstances? Son doudou! Mais ça, personne ne le sait : ni les élèves, ni les parents, ni le maire de la ville. Jusqu'au jour où...

L apprenti Chevalier Tous au match

By Berengere Delaporte, Nicolas Christophe, Remi Chaurand

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Tetine Man

By Christophe Nicolas

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Le quotidien d'un petit garçon doté d'un instrument de pouvoir incroyable, une tétine, mis en scène dans trois histoires hilarantes ...

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.