William J. Donahue Books

Brain Cradle

By William J. Donahue

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Too Much Poison

By William J. Donahue

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Basil the demon king has come to a crossroads. He has grown tired of life underground and regretful of the atrocities he has committed to maintain his hold on power. Wanderlust leads him to the sur...

Filthy Beast

By William J. Donahue

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Crawl on Your Belly All the Days of Your Life

By William J. Donahue

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Only Monsters Remain

By William J. Donahue

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Only Monsters Remain

By William J. Donahue

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Burn Beautiful Soul

By William J. Donahue

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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.