Cathy Williams Books

The Uncompromising Italian

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To stop a threat to expose his greatest secret, billionaire Alessio Baldini needs the very best. Lesley Fox's name is on everyone's lips, and he soon sees why--as challenging as she is alluring, sh...

To sin with the tycoon

By Cathy Williams

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With the quirk of an eyebrow, Gabriel Cabrera can get anything he wants!

At Her Boss s Pleasure

By Cathy Williams

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The Surprise De Angelis Baby

By Cathy Williams

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Charade of the Heart Harlequin Presents Volume 5

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"I can do without being known as someone who has a tramp for a secret". Now that wasn't fair! Marcos Adrino might have been taken in by Beth's impersonation of her identical twin sister, but neith...

Too Scared to Love Harlequin Presents 12

By Cathy Williams

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Shadows of Yesterday Harlequin Presents 28

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Vengeful Seduction

By Cathy Williams

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Naive Awakening Harlequin Presents 74

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Bittersweet Love Harlequin Presents 81

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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.