JOHN LAYMAN Books

Ciclope 2. Mi Vida Como Pirata

By JOHN LAYMAN, URIEL LOPEZ

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Chu Vol. 2

By John Layman, Dan Boultwood

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Godzilla: World of Monsters

By John Layman Cullen Bunn Joshua Fialkov Dave Wachter Alberto Ponticelli

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Monsters rule the world in this compendium collecting three graphic novels--Gangsters & Goliaths, Cataclysm, and Oblivion!In Gangsters & Goliaths by John Layman and Alberto Ponticelli, Detective Ma...

Suicide Squad: Kill Arkham Asylum

By John Layman

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Before The Suicide Squad takes on your favorite heroes in the upcoming  video game, Suicide Squad: Kill The Justice League, pick up this thrilling prequel and watch them kill Arkham Asylum!Ama...

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.