Jonathan Kellerman Books

Obsession

By Jonathan Kellerman

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Gone

By Jonathan Kellerman

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True detectives

By Jonathan Kellerman

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Psychologist Alex Delaware joins forces with brothers Moe Reed and Aaron Fox as they seek to uncover secrets in high places that could explain the fate of an outwardly innocent young woman.

Killer

By Jonathan Kellerman, John Rubinstein

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Killer

By Jonathan Kellerman

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"The City of Angels has more than its share of psychopaths, and no one recognizes that more acutely than the brilliant psychologist and police consultant Dr. Alex Delaware. Despite that, Constance...

Evidence An Alex Delaware Novel

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Mystery An Alex Delaware Novel

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Victims An Alex Delaware Novel

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Cold Heart

By Jonathan Kellerman

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Flesh and Blood

By Jonathan Kellerman

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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.