Bernard Roger Books

Choc des nombres

By Bernard Roger

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Avenir incertain

By Bernard Roger

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The initiatory path in fairy tales

By Bernard Roger

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"Hidden within age-old classic stories lie the hermetic teachings of alchemy and Freemasonry [bullet] Explains how the stages of the Great Work are encoded in both little known and popular stories...

A la decouverte de l alchimie

By Bernard Roger

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Initiation et contes de fees

By Bernard Roger

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Le rayonnement solaire

By Bernard Roger

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Rayonnement solaire

By Bernard Roger

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La cuisson solaire facile

By Bernard Roger

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Travail et l'espoir

By Bernard Roger

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De Quebecois a Ontarois

By Bernard Roger

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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.