Jim Calafiore Books

Christopher Priest's revolutionary run concludes! It's Black Panther vs. Iron Man - with Wolverine in the middle! Secrets are revealed, punches are thrown, and King Solomon's Frogs wreak havoc - bu...

Avengers Iron Man

By Jim Calafiore, Stewart Johnson, Marvel Comics, Jim Cheung, Dan Abnett

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Green Lantern New Gods

By Jim Calafiore, Bernard Chang, Tomeu Morey, Walker Brad Comic Book Artist, Cullen Bunn, Lee Weeks, Van Jensen, Billy Tan, Charles Soule, Justin Jordan, Robert Venditti

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"Highfather, leader of the New Gods, has long studied the infinite and infinitely mysterious Source Wall which surrounds the universe. Now, he has learned that during "Green Lantern: Lights Out," t...

Leaving Megalopolis

By Jim Calafiore, Gail Simojne

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Gotham underground

By Frank Tieri

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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.