George Mann Books

Associates of Sherlock Holmes

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For the very first time, famous associates of the Great Detective – clients, colleagues, and of course, villains – tell their own stories in this collection of brand-new adventures. Fol...

Doctor Who: The Twelfth Doctor Vol. 5: The Twist

By Rachael Stott, Written By George Mann With Art By Mariano Laclaustra

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Collecting Year Two #6 - 10 of the ongoing Twelfth Doctor comic adventures! The Doctor visits planet Twist, the colony with 'the best punk scene this side of the 40th century!' But something is ami...

Doctor Who: The Twelfth Doctor Vol. 5: The Twist

By Ivan Nunes, Written By George Mann With Art By Mariano Laclaustra Rachael Stott Carlos Cabrera

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DON'T MISS THE STUNNING FIFTH COLLECTION OF THE TWELFTH DOCTOR'S ALL-NEW COMICS ADVENTURES! Collecting Year Two #6 - 10 of the ongoing Twelfth Doctor comic adventures! The Doctor visits planet Twis...

Dark Souls Vol. 2: Winter's Spite

By George Mann

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BASED ON THE BESTSELLING GAME DARK SOULS! A BATTLE-HARDENED WARRIOR SEEKS ESCAPE FROM A WINTRY WORLD OF BLOOD AND ICE!      Beyond this tenuous fabric lies anothe...

Warhammer 40 000 Vol. 1

By Enrica Angiolini, Tazio Bettin, George Mann

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Warhammer 40 000 Vol. 2

By Enrica Angiolini, Tazio Bettin, George Mann

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Warhammer 40 000

By Tazio Bettin, George Mann, Enrica Eren Angliolini

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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.