Devin Grayson Books

>Batman and his allies continue their fight to save Gotham during its darkest hour. In this final volume, Lex Luthor swoops in to help rebuild Gotham City - but his secret plan is to secure the own...

Batman

By Dennis O Neil

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"Written by Dennis O'Neil, the dean of Batman writers. While on a case far from Gotham City, Batman is injured, and by the time he recovers and returns to his home, Alfred is missing. As Batman sea...

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.