Geoffrey Cornelius Books

S'appuyant sur les connaissances actuelles de l'astrologie, de l'astronomie et de l'anthropologie, ce livre richement illustré met à jour les interprétations et perceptions spirituelles et psycholo...

Starlore of the Constellations

By Geoffrey Cornelius

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IMMERSE YOURSELF IN THE STORIES OF THE SKYDiscover the mysteries of celestial mythology with this comprehensive introduction to the constellations and the stars that comprise them. This fascinating...

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.