Geoff Johns Books

Lanterna Verde A Guerra dos Aneis Volume 1

By Geoff Johns

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Justice League Cilt 5 Daima Kahramanlar

By Geoff Johns

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The Mighty Thor Lord Of Asgard

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Vision

By Geoff Johns, Marvel Comics, Ivan Reis

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Ultimate X Men Vol. 12

By Aaron Lopresti, Brian K. Vaughan, Geoff Johns, Tom Raney, Steve Dillon, Stuart Immonen

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Storm travels to the Great White North to find her missing friend and finds herself facing Lady Deathstrike instead. Then, a mutant resistant to psychic control takes the Manhattan Bank hostage wit...

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.