Mary Kay McComas Books

Modern Business Correspondence

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Suite 606

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#1 New York Times bestselling author J. D. Robb presents four stories of paranormal desire and suspense—featuring a Lieutenant Eve Dallas novella.In J. D. Robb's "Ritual in Death," Eve Dallas plun...

Follow four of today’s most provocative authors to a place where love can transform reality—and anything can happen. Here they present four paranormal stories of ethereal circumstances, magical rom...

Dead of Night

By Ruth Ryan Langan, Mary Blayney, Nora Roberts, Mary Kay McComas

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Four New York Times bestselling authors breach the boundaries of time and reality in these paranormal tales of suspense, intrigue, and out-of-this world passion…Futuristic lieutenant Eve Dallas end...

The Other Side

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Featuring a Lieutenant Eve Dallas novella, this collection of paranormal romance stories from five New York Times bestselling authors will take you to a realm where suspense, desire, and love have...

The Unquiet

By Nora Roberts

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Settle in for five startling tales of uncanny suspense and disquieting romance—including an In Death story featuring Lieutenant Eve Dallas from #1 New York Times bestselling author J. D. Robb. Eve...

Mirror, Mirror

By Mary Kay McComas, R. C. Ryan, Mary Blayney, Elaine Fox, Nora Roberts

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Five twists on classic fairy tales from five mesmerizing authors—including "Taken in Death," a Lieutenant Eve Dallas story from #1 New York Times bestselling author J. D. Robb. Once upon a time, in...

Down the Rabbit Hole

By Mary Kay McComas, Elaine Fox, R. C. Ryan, Mary Blayney, Nora Roberts

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Some of your favorite romance authors present five stories told through the looking glass—including "Wonderment in Death," a Lieutenant Eve Dallas novella from #1 New York Times bestselling author...

Someday Somewhere

By Mary Kay McComas

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Divine Design

By Mary Kay McComas

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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.