Dennis Hopeless Books

Spider Woman

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Nothing can prepare Jessica Drew for the multidimensional insanity of Spider-verse. A war is brewing, and every spider-character in the multiverse is a target. With Silk, the newest spider on the b...

XMen XMen Marvel Hardcover

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X Men

By Kieron Gillen, Marvel Comics, Dennis Hopeless, Jamie McKelvie

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Avengers arena

By Dennis Hopeless

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Avengers Arena

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"Awakening on an isolated island, a scared group of young superhumans-- including X-23, Darkhawk, and members o the Runaways and the Avengers Academy-- are given a chilling ultimatum by their demen...

Cable And Xforce

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Cable And Xforce

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Avengers Arena

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Avengers Undercover Decent

By Dennis Hopeless, Green Timothy II, Kev Walker

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Avengers undercover

By Dennis Hopeless

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"Which young hero becomes a villain? The Murder World survivors continue their infiltration of the Masters of Evil! The character journeys that began in 'Avengers Academy' and 'Avengers Arena' come...

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.