Walter Geovanni Books

Red Sonja Vol. 7

By Vinicius Andrade, Walter Geovanni, Brian Reed, Mel Rubi

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Red Sonja Omnibus Volume 2

By Walter Geovanni, Homs, Brian Reed, Mel Rubi, Michael Avon Oeming

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Red Sonja

By Eric S. Trautmann, Walter Geovanni, Wagner Reis

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Doctor Who: Supremacy of the Cybermen

By Walter Geovanni, Written By Cavan Scott, George Mann With Art By Ivan Rodriguez

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Exiled from Gallifrey at the very end of Time, Rassilon, fallen leader of the Time Lords, has been captured by the last of the Cybermen. Now the Cybermen have access to time travel. With it, every...

Witchblade Shades of Gray

By Stephen Segovia, Walter Geovanni, Leah Moore, John Reppion, Edgar Salazar

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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.