El Don Guillermo Books

Le melange des sexes

By El Don Guillermo, Genevieve Fraisse

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Dame un beso

By Raul Martinez, El Don Guillermo

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Je danse donc je suis

By El Don Guillermo, Alain Foix

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Generation ado le dico

By Jeanne Siaud Facchin, Regis Faller, El Don Guillermo

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Ce dictionnaire a été rédigé pour et par des collègiens, autour de 200 termes recensant les problèmes rencontrés à l'adolescence.

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.