Valerie Le Du Books

La mer

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Les thèmes abordés illustrent l'origine des océans et de l'eau ; pourquoi la mer est salée ; les vents, les côtes, les paysages et les reliefs sous-marins ; les grands océans, leur particularité, l...

ATLAS DES ENFANTS

By Valerie Le Du, Colette Hus David, Jane Delaroche

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La mer

By Valerie Le Du

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Mir moria

By Valerie Le Du

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Oceans and the wide variety of life that dwells within them are explained in this work.

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.