John Harris Dunning Books

Comics Unmasked Art and Anarchy in the UK

By Paul Gravett, John Harris Dunning

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Comics Unmasked

By Paul Gravett, John Harris Dunning

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Tumult

By John Harris Dunning

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Salem Brownstone: All Along the Watchtowers

By John Harris Dunning Illustrated By Nikhil Singh

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A mundane life takes a strange and magical turn in this rich gothic fantasy told with vivid black-andwhite art — a graphic novel perfect for a Halloween night. As he twists the key and s...

Salem Brownstone

By John Harris Dunning, Nikhil Singh

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Salem Brownstone

By John Harris Dunning, Nikhil Singh

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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.