John Griffiths Books

Carnaval
Carnaval

By John Griffiths

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Lasers and holograms
Lasers and holograms

By John Griffiths

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ISDN Explained: Worldwide Network and Applications Technology, 3rd Edition
Take a trip to Puerto Rico
Take a trip to Puerto Rico

By John Griffiths

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An introduction to the geography, history, government, economy, people, and culture of the fertile island located 1000 miles southeast of Florida.

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The Homilies appointed to be read in churches
Swansea and the arts
Girl on the Run
Girl on the Run

By John Griffiths

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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.

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