Catherine Marcus Books

Francais langue seconde

By Catherine Marcus

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L oiseau de mauvais augure

By Lena Grumbach, Catherine Marcus, Camilla Lackberg

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Blanche et Marie

By Per Olov Enquist

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Roman psychologique (intime). Roman historique.

Le mec de la tombe d a cote

By Lena Grumbach, Katarina Mazetti, Catherine Marcus

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Les larmes de Tarzan

By Katarina Mazetti

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Elle, c'est Mariana, mais leur rencontre fut assez fracassante pour qu'il la surnomme Tarzan. Lui, il s'appelle Janne, pour de vrai. Mère célibataire, elle élève seule deux enfants, caresse le souv...

Mon doudou divin

By Katarina Mazetti, Lena Grumbach, Catherine Marcus

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Mon Doudou Divin

By Katarina Mazetti, Lena Grumbach, Catherine Marcus

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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.