Kris Justice Books

Gurps Zombies 4th Edition

By Alex McVey, Alex Fernandez, Sean Punch, Kris Justice

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Go Boy 7 Volume 1

By Tom Peyer, Jon Sommariva, Kris Justice, Peyer Tom.

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Jonny Zero was revived from death by his uncle, Professor Zero, who infused his blood with experimental robotic nanotech plasm. Now, Johnny is Go Boy 7, a human action machine. He joins Jett Girl a...

Go Boy 7 Volume 2

By Brian Augustyn, Todd Demong, Jon Sommariva, Kris Justice

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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.