Rupert Matthews Books

Through the letters of a squire of the knight Sir Edmund Perry, the reader is immersed in the life at Oxney Castle in Medieval England. Experience the excitement of a tournament, the preparations f...

DK Readers L2: Battle at the Castle

By Rupert Matthews

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DK Readers L3: Rain Forest Explorer

By Rupert Matthews

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Follow the blogs of an adventurous young explorer through the Amazon to her uncle's rain forest research station. Her trip takes her along the Rio Blanco river; she goes jaguar tracking, joins trib...

DK Readers L3: Rain Forest Explorer

By Rupert Matthews

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DK Adventures: Battle in the Air (WWII)

By Rupert Matthews

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In DK Adventures: Battle in the Air, Zoe and Zak discover a battered old metal box that belonged to their grandfather when he was in the Navy. As they look through the box, Granddad tells stories a...

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.