Garth Ennis Books

"The titular Hellblazer, Constantine is a working-class occult detective and con man stationed in London. He is known for his endless cynicism, deadpan snarking, ruthless cunning and constant chain...

John Constantine Hellblazer Vol. 20

By Mike Carey

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John Constantine Hellblazer Vol. 21

By Andy Diggle

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Punisher Max by Garth Ennis Omnibus Vol. 2

By Garth Ennis

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Punisher Max by Garth Ennis Omnibus Vol. 1

By Garth Ennis

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Marvel Knights By Joe Quesada Omnibus

By Jimmy Palmiotti, Joe Quesada, Garth Ennis, Kevin Smith

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Marvel Knights Punisher by Garth Ennis

By Garth Ennis

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Marvel Knights Punisher by Garth Ennis

By Garth Ennis

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The Punisher

By Garth Ennis

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"From 2003 to 2008, writer Garth Ennis worked with some of the best artists in comics to produce an unforgettable run on The Punisher. Now, Marvel presents a new collection of the stories that chan...

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.