Christopher Gravette Books

Tewkesbury, 1471

By Christopher Gravette, Christopher Gravett, Nicolle, David, Shpakovskii, Viacheslav Olegovich, Turnbull, Stephen R., Bennett, Matthew, Armstrong, Pete, Gravett, Christopher

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After the crushing Yorkist victory at Towton in 1461, King Edward IV appeared to have triumphed in England's bloody Wars of the Roses. The Lancastrian King Henry VI was even a prisoner in the Tower...

Viking Times

By Christopher Gravette, Christopher Gravett

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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.