Alexandre Delmar Books

Prelude a une vie heureuse

By Alexandre Delmar

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Te revoir

By Alexandre Delmar

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Le syndrome de la cedille

By Alexandre Delmar

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Notes from the Underdog

By Alexandre Delmar, Margarida Quinta, Luis Ribeiro Da Silva, Joaquim Moreno, John Wriedt

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Le garcon qui pleurait des larmes d'amour

By Alexandre Delmar

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"Dès son plus jeune âge, Maxime comprend qu'il n'est pas tout à fait comme les autres garçons. Grâce au soutien de sa mère, il accepte sa différence avec une maturité inhabituelle. Il préservera ai...

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.