Leonard Kirk Books

The internet-wrecking end of the Fantastic Four is here! The team meets the All-New Invaders as the hunt for Reed Richards and the missing Future Foundation kids continues! Meanwhile, the mastermin...

Superman

By Mark Schultz, Peter David, Joe Kelly, Jeph Loeb, Joe Casey

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Collects the entire saga of Our Worlds at War, in which Superman and Earth's mightiest heroes face the ultimate destructive force, Imperiex, to stop it from destroying the universe in order to rema...

Second Coming

By Andy Troy, Patton Oswalt, Richard Pace, Mark Russell, Leonard Kirk

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Freshmen Volume 1 Freshmen

By Seth Green, Hugh Sterbakov, Leonard Kirk

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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.