Jonathan Kellerman Books

The Conspiracy Club

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NEW YORK TIMES BESTSELLER When his passionate romance with nurse Jocelyn Banks is cut short by her kidnapping and brutal murder, young psychologist Jeremy Carrier is left emotionally devastated...

Therapy

By Jonathan Kellerman

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NEW YORK TIMES BESTSELLER Behind the yellow crime-scene tape, a brutal tableau awaits. On a lonely lovers’ lane in the hills of Los Angeles, a young couple lies murdered in a car. Each victim b...

Private Eyes

By Jonathan Kellerman

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Private Eyes

By Jonathan Kellerman

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When the Bough Breaks

By Jonathan Kellerman

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Monster

By Jonathan Kellerman

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Billy Straight

By Jonathan Kellerman

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Monster

By Jonathan Kellerman

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Monster

By Jonathan Kellerman

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Monster

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.