Derek J. Richardson Books

France, le type paix, 1932-1941

By Derek J. Richardson

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Tables of French postal rates 1849 to date

By Derek J. Richardson

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Detachment W

By Derek J. Richardson

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Account of the escape of members from the so-called (by the French) "Détachement W", soldiers from the British Army and Royal Air Force, who after escaping from German prisons were recaptured in oc...

Detachment W

By Derek Richardson

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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.