Patrick Olliffe Books

Frankenstein

By Patrick Olliffe, Martin Powell

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Ms. Marvel Volume 7

By Patrick Olliffe, Brian Reed

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Spider Man

By Paul Tobin, Pepe Larraz, Nick Dragotta, Henry Clayton, Patrick Olliffe

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JSA Classified

By Ruy Jose, Jen Van Meter, Peter J. Tomasi, Patrick Olliffe, Don Kramer

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Edgeworld

By Written By Chuck Austen. Illustrated By Patrick Olliffe.

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An edgy, potent adventure series that’s part science-fiction, part detective series, part western, Edgeworld is a unique blend of energy, comedy and darkness like nothing you’ve ever re...

Barb Wire Book 1: Steel Harbor Blues

By Chris Warner Patrick Olliffe

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Hard as nails and hot as hell, badass bounty hunter Barb Wire rides the meanest streets of America's toughest town: Steel Harbor, USA. Barb tracks gangsters who can punch through walls and crush ca...

Barb Wire Book 2: Hotwired

By Chris Warner

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Braced by shady federal agents, bounty hunter Barb Wire is forced to locate an old associate who the agents claim is the most dangerous man alive. With no choice but compliance, Barb learns that he...

Manager Manage Thyself

By Patrick Olliffe

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Manager Manage Thyself

By Patrick Olliffe

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Rough Riders

By Adam Glass, Mike Marts, Patrick Olliffe

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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.