Denis Lelievre Books

Je ne sais pas quoi faire

By Denis Lelievre

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Noeuds malins

By Denis Lelievre

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Propose aux jeunes une description des grands noeuds du répertoire de la navigation, mais aussi quelques divertissements manuels dont certains sont notamment destinés aux lecteurs plus petits.

Not quite dead

By Gilbert Shelton, Denis Lelievre, Francisco Perez Navarro

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No se que hacer I Don t Know What to Do

By Denis Lelievre

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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.