Sylvie Reff Books

Soleil de prieres

By Sylvie Reff, Andre Stern

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PASSEURS DE COURAGE 22 portraits de contemporains devenus symboles de courage

By Sylvie REFF

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Héros de l'ombre ou figures célèbres, ces vingt-deux contemporains sont des passeurs de ce courage devenu plus précieux que jamais. Onze hommes et onze femmes très différents, qui ont tiré leur for...

Lumiere des vivants

By Sylvie Reff

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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.