Mark Millar Books

Kick Ass Premiere HC Direct Market

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1985 Marvel Premiere Edition HC

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Ultimate Galactus Trilogy

By Warren Ellis, Mark Millar

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Ultimate X Men

By Brian Michael Bendis

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Wolverine is forced to call upon Spider-Man and Daredevil for protection against Weapon X in New York City, and the president decides to assemble a new team of mutants to serve his political ends,...

Ultimate Comics Avengers vs. New Ultimates

By Mark Millar

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Supercrooks

By Nacho Vigalondo, Mark Millar

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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.