Gerard Doyle Books

Them or Us
Them or Us

By David Moody, Gerard Doyle

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The Neverending Story
The Graves Are Walking
The Trigger
The Trigger

By Gerard Doyle, Tim Butcher

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The Uses of Enchantment
MatchUp
Thomas Murphy
Thomas Murphy

By Roger Rosenblatt, Gerard Doyle

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Strange Affair of Spring Heeled Jack The
The Stars My Destination
Gold Son The
Gold Son The

By Carrie Anne Noble, Gerard Doyle

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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.

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