John Paul Leon Books

Milestone Compendium is a can't-miss collection for any Milestone Comics or 90's comics fan!A new volume of fan-favorite Milestone comics from the 90's are collected in this brilliant compendium ed...

Winter Soldier Dossier Edition

By Michael Lark, Ed Brubaker, John Paul Leon, Steve Epting, Mike Perkins

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Static

By Dwayne Mcduffie, John Paul Leon, Robert L. III Washington

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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.