David Grimstone Books

2: Escape from Evil

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As their gladiator training continues, the enslaved Decimus Rex and his five cellmates are forced to endure a series of public trials in the Arena, including hand-to-hand combat with a fellow slave...

3: Stowaway Slaves

By Grimstone David, David Grimstone

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The Rebels' Assault: Book 4

By David Grimstone

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When Decimus Rex is kidnapped by slave-takers and arrives at the Arena Primus, he is convinced he has the strength and determination to earn his freedom. However, in order to do this, he must outsh...

Gladiator boy vs the white snake

By David Grimstone

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Captured once again by the evil Slavious Doom, the slaves are bound for Pin Yon Rock. There, Decimus is ordered to capture the White Snake - in return for his friends' lives ... Once again they are...

Gladiator boy vs the Golem army

By David Grimstone

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Decimus Rex and Ruma are surrounded by statues on Pin Yon Rock and are horrified to discover them suddenly come to life. Will they be cut down by this new enemy or will they persuade them to fight...

Rescue Mission 5 Gladiator Boy

By David Grimstone

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The Blade of Fire 6 Gladiator Boy

By David Grimstone

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A Hero s Quest Turtleback School Library Binding Edition Gladiator Boy Pb

By David Grimstone

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The game

By David Grimstone

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"A game has given Jake and his friends powers they never dreamed of. A mysterious organisation will stop at nothing to recover it"--Back cover.

Gladiator Boy tome 4 L attaque des rebelles

By Christophe Rosson, David Grimstone

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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.