Gemma Halliday Books

These Boots Were Made for Strutting

By Lisa Cach, Melanie Jackson, Gemma Halliday

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Scandal sheet

By Gemma Halliday

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"Calvin Dean's got a charming smile and an alpha-dog attitude. But that doesn't mean Tina's happy editor Felix Dunn has saddled her with the built bodyguard. How's she supposed to get the scoop on...

Spying in High Heels

By Gemma Halliday

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Undercover in High Heels

By Gemma Halliday

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Alibi in High Heels

By Gemma Halliday

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Hollywood scandals

By Gemma Halliday

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Hollywood confessions

By Gemma Halliday

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Allie Quick has high aspirations - much higher than reporting on the latest celebrity gossip for the L.A. Informer, Hollywood's most notorious tabloid. But if she's going to join the ranks of the r...

Danger in High Heels

By Gemma Halliday

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Chocolate Covered Death

By Gemma Halliday

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A Sip Before Dying

By Gemma Halliday

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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.