Jonathan Kellerman Books

Therapy

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Alex Delaware has the psychologist probing a double murder. A siren lures Delaware and his friend, homicide cop Milo Sturgis, from dinner to a crime scene. An unzipped man and a half-naked woman ha...

Gone

By Jonathan Kellerman

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Gone

By Jonathan Kellerman

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Obsession

By Jonathan Kellerman

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Self-Defense

By Jonathan Kellerman

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The murder book.

By Jonathan Kellerman

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The Butcher's Theater

By Jonathan Kellerman

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Silent Partner

By Jonathan Kellerman

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Time Bomb

By Jonathan Kellerman

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Private Eyes

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.