Karen Ellis Books

A map of the dark

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Racing against time to find a teenage girl who has gone missing from Queens, FBI agent Elsa Myers navigates a frustrating series of false leads while enduring the collapse of her own carefully comp...

A Map of the Dark

By Karen Ellis

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Last Night

By Karen Ellis

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EKG Plain and Simple: From Rhythm Strips to 12-Leads

By Karen Ellis

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EKG Plain and Simple

By Karen Ellis

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EKG plain and simple

By Karen M. Ellis

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MyLab Health Professions with Pearson eText Access Card for EKG Plain and Simple

By Karen Ellis

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EKG Plain and Simple Plus NEW MyLab Health Professions with Pearson eText Access Card Package

By Karen Ellis

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By Karen Ellis, Richard Boston

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A Map of the Dark

By Karen Ellis

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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.